The "insecurity" caused by leaving the EU would be "fantastic" for the UK, one of the biggest donors to an exit campaign has said.

Stockbroker Peter Hargreaves told Reuters the UK would "become incredibly successful" as it "will be insecure again - and insecurity is fantastic".
The Remain campaign said his comments showed Leave campaigners were "willing to risk making families worse off".
The UK was "stronger and better off" in the EU, director Will Straw said.
The UK votes on whether or not to remain a member of the European Union in a referendum on 23 June, with the economy one of the key battlegrounds in the campaign.
Remain campaign Britain Stronger in Europe says the UK economy will shrink and jobs will be lost if Britain withdraws from the EU - but Leave campaigners says the economy would thrive as it would be free of what it calls EU red tape and able to negotiate trade deals with other countries.
How trade and the UK's economy are affected by membership of the EU.
In an interview with Reuters news agency, Mr Hargreaves - who has donated £3.2m to Leave.EU, a group founded by UKIP donor Arron Banks which lost out to Vote Leave in the race for the official designation - said a vote to leave would create uncertainty in the UK.
But he argued that was what the country needed, saying it "would be the biggest stimulus to get our butts in gear that we have ever had".
"It will be like Dunkirk again," he said. "We will get out there and we will be become incredibly successful because we will be insecure again. And insecurity is fantastic."
Mr Hargreaves, who founded investment firm Hargreaves Lansdown, criticised some of the "bizarre" EU regulation Britain's financial services and business were subject to, saying it was set by people "who have never been to Britain and wouldn't know how to spell financial services".
He stepped down from the board of the company last year, but still owns a stake of more than 30%. He was speaking in a personal capacity.
Green MP Caroline Lucas, on the board of Britain Stronger In Europe - the official Remain campaign - said remaining in the EU would ensure the UK enjoyed "continued prosperity as part of Europe".
"Insecurity might be exciting for billionaire hedge fund managers like Peter Hargreaves, but for most people in Britain it risks jobs being lost, prices rising and small businesses being hit.
"It also risks our hard won rights at work and the environmental protections which keep us safe," she said.
The group's executive director, Will Straw, said Britain was "stronger, safer and better off in Europe than we would be on our own".
"These out-of-touch remarks from the Leave campaign's biggest donor show they simply do not care about the damaging consequences for people's jobs, family finances and Britain's economy," he added.


Russell Brand says he wants to sue The Sun newspaper.

The paper ran a front page headline calling the comedian a "hypocrite" because he campaigns for economic and political "revolution" to help poorer people, yet he lives in a luxury home.
It's an accusation often made against the star.
How can such a rich man claim to speak up for the poor?
Viewers of Brand's vlogs - The Trews - are familiar with the inside of his spacious London home. It looks lovely and airy. It has wooden floors and exposed brickwork.
When the St Trinian's star was outside the prime minister's Downing Street home - supporting a campaign by residents of an east London estate who fear they will be turfed out of their homes to allow richer renters to move in - Brand was asked about his own accommodation by a TV reporter.
"Part of the problem is the super-rich buying property in London, isn't it? What kind of rent are you paying?"
Brand wasn't very happy with the question. He called the Channel 4 News journalist "a snide", before walking off.
Newsbeat contacted Brand to see if he was really going to take legal action against The Sun and its owner Rupert Murdoch.
He didn't reply, though he has been tweeting about The Sun and it's accusations of hypocrisy - using the hashtag #TheSunLogic.
The star's been condemned as a hypocrite plenty of times before. Here's how he's explained it in the past.
"Don't think I'm unaware of the inevitability of such a charge. I know, I know. I'm rich, I'm famous, I have money... There is no doubt that I as much as anyone have to change.
"Revolution is change. I believe in change, personal change most of all. Know, too that I have seen what fame and fortune have to offer and I know it's not the answer.
"Of course I have to change as an individual and part of that will be sharing wealth, though without systemic change, that will be a sweet, futile gesture."
"I can't deny that I've done a lot of daft things while I was under the capitalist fugue, some silly telly, soppy scandals, movies better left unmade.
"It's easy to attack me, I'm a right twerp, I'm a junkie and a cheeky monkey, I accept it, but that doesn't detract from the incontrovertible fact that we are living in a time of huge economic disparity and confronting ecological disaster."
"Now I'm rich and I complain about inequality they say I'm a hypocrite. I'm beginning to think they just don't want inequality on the agenda because it is a real problem that needs to be addressed."
"A system that has posited me on a lilo made of thighs in an ocean filled with honey and foie gras'd my Essex arse with undue praise and money.
"The hypocrisy ... is a problem that can be taken care of incrementally."
Follow @BBCNewsbeat on Twitter and Radio1Newsbeat on YouTube


A football fan from Australia travelled to a match 10,000 miles away from his home only to find it was called off.

Southend United supporter Andrew Urry, who lives in Brisbane, travelled to Bradford on Saturday but the match was postponed due to a waterlogged pitch.
"We were told as the coach pulled up outside the stadium," Mr Urry said.
"I got off the coach to have a couple of pictures taken outside the away turnstile, and then we were straight back on the road again."
Former Southend resident Mr Urry manages to keep up with some matches via the internet, but a trip to watch the Shrimpers play live was to be a highlight of a trip to Europe.
"I wanted a trip on a coach as a nostalgia trip, as I used to in the old days," he said.
On the coach, Mr Urry used social media to keep him updated with the chances of Saturday's match at Valley Parade going ahead, and said he had a "pretty good idea it was going to be called off".
However, it was not until they arrived at the stadium that the postponement was confirmed by a steward.
Mr Urry hopes to catch Southend's next three home matches, as well as the Boxing Day local derby at Colchester.
The club also made an effort to soften the blow of his wasted journey on Saturday, asking on Twitter: "Would a signed Southend United ball help at all?"


A major development next to Central Station has been approved by Belfast city council's planning committee.

The Kilmona Group intends to build around 300,000 sq ft of office space, spread across four blocks.
Some residents in the adjacent Markets area have objected to the scheme, saying it will overshadow their homes and add to car parking problems.
The Kilmona Group owner, Paddy Kearney, told the council the scheme will represent an investment of over £50m.
He said the scheme is already on the shortlist of a potential occupier who requires 125,000 sq ft by early 2018.
It is understood that HM Revenue and Customs may be considering the development as they consolidate most of their Northern Ireland operations onto a single site.
The scheme will consist of a 14-storey block adjacent to the station, a 10-storey block fronting onto East Bridge Street and two three-storey blocks fronting onto Stewart Street.
Members of the Markets Development Association said they objected to the scale of the development.
Sinn Féin members on the planning committee voted against the scheme.
Stephen Blaney, the architect of the project from Coogan & Company, said the approval "sends a very positive message to the international investment community".
He added: "The design creates a new entry point for Belfast city centre and will be of a quality and size to attract the most demanding of international and domestic occupiers."


Munster mauled their way to a bonus-point win over Edinburgh at Murrayfield, seizing second place in the Pro12 on points difference.

The hosts were overpowered up front and outfought at the breakdown, with driving mauls yielding tries for Duncan Casey, CJ Stander and Conor Murray.
Simon Zebo scored a controversial fourth, with fellow winger Keith Earls bagging a fifth.
Tom Heathcote scored Edinburgh's only points with a penalty three minutes in.
Twelve months ago at Meggetland, Edinburgh were overtaken by Cardiff Blues, effectively snuffing out their faint hopes of a sixth-place finish.
One year on, the outlook for Alan Solomons' side is substantially rosier as they chase European Champions Cup qualification, but this defeat highlighted the disparity between the Scots and the Pro12 title-chasers.
While the Munster line-up featured several Irish Six Nations champions, Edinburgh lost scrum-half Sam Hidalgo-Clyne to a chest injury pre-match and then Dave Denton.
Heathcote assumed kicking duties and put Edinburgh ahead after their brightest - and only - threatening spell in the away 22.
Ian Keatley levelled from the tee as the clock struck 20 minutes and, although Edinburgh were dominant in the scrum, their infringements and failure to repel the Munster maul were punished when the visitors' pack rumbled their way over, Casey the scorer.
Fly-half Keatley struck a sweet touchline conversion to hand his side a seven-point half-time lead.
Edinburgh continued to put themselves under pressure after the interval, struggling to exit to their 22 and shipping penalties as Munster dominated territory.
The scarlet-clad forwards mauled their way to the line again on 52 minutes, Stander grounding for his seventh league try of the season.
Keatley pushed the conversion wide, but Edinburgh wing Tim Visser was sin-binned after he transgressed at the breakdown in an effort to halt a blistering Munster counter attack.
Anthony Foley's side crossed for the third time as scrum-half Murray broke from yet another menacing maul, his half-back partner converting.
With Edinburgh's cover defence all at sea, Zebo then toed through a Felix Jones grubber before appearing to miss the ball altogether in his race to ground it before the dead ball line. However TMO Iain Ramage awarded the try.
Keatley struck the posts with his conversion attempt, but his neat rolling kick was fumbled by Phil Burleigh, allowing Earls to pounce for Munster's fifth.
The streetwise visitors continued to flex their muscles, vanquishing the memory of their opening-round loss to Edinburgh at Thomond Park, but could not score again.
With top-six rivals Connacht and Scarlets picking up one and four points from their respective fixtures, Edinburgh trail them in the standings by a point.
They have plenty to address before their European Challenge Cup semi-final against Dragons at Murrayfield on Friday.
Edinburgh: Tonks, Fife, Burleigh, Strauss, T. Visser, Heathcote, Fowles, Dickinson, Ford, W. Nel, Bresler, Toolis, Grant, Watson, Denton.
Replacements: Brown for Tonks (67), Beard for Heathcote (55), Hart for Fowles (55), Shiells for Dickinson (69), Andress for W. Nel (69), McKenzie for Bresler (51). Not Used: McInally, Leonardi. Sin Bin: T. Visser (56).
Munster: Jones, Earls, Smith, D. Hurley, Zebo, Keatley, Murray, Kilcoyne, Casey, Botha, B. Holland, O'Connell, P. O'Mahony, O'Donnell, Stander.
Replacements: R. O'Mahony for Earls (65), Williams for Zebo (73), Hanrahan for Keatley (65), J. Cronin for Kilcoyne (51), Guinazu for Casey (60), Archer for Botha (60), D. Ryan for B. Holland (51), D. O'Callaghan for P. O'Mahony (63).
Att: 4,818.


US poet Calvin Trillin has said he has been misinterpreted after being accused of racism over a poem on Chinese food.

The work - Have They Run Out of Provinces Yet? - was published in the latest edition of the New Yorker.
In it he name-checks a number of branches of regional Chinese cookery. Critics attacked the poem as unfunny and prejudiced.
But Trillin told the Guardian it "was simply a way of making fun of food-obsessed bourgeoisie".
A food writer as well as regular contributor to the New Yorker, he added: "Some years ago, a similar poem could have been written about food snobs who looked down on red-sauce Italian cooking because they had discovered the cuisine of Tuscany."
His latest work begins: "Have they run out of provinces yet? If they haven't, we've reason to fret."
It continues with a culinary tour around China. "But then food from Szechuan came our way / Making Cantonese strictly passe," he writes, later forming rhymes around "Szechuanese", "Shanghainese" "Hunan" and "Fukien".
"Could a place we extolled as a find," he asks, "Be revealed as one province behind?"
Trillin and the New Yorker have come under fire from writers and critics.
Poet and performer Franny Choi responded with her own poem, Have They Run Out of White Poets Yet? which mirrors the structure of Trillin's work.
In it she describes Trillin as "a sad send-up of Dr Seuss decked in his finest anti-Asian regalia".
Others though were baffled by the response and agreed with Trillan's defence.
And Chinese-American writer Kaiser Kuo wrote he "honestly can't fathom why some Chinese-Americans take such affront at Calvin Trillin's Chinese food poem".


More than 1,000 Desertas wolf spiderlings have hatched at Bristol Zoo - the first time the rare spider has been bred in captivity.

The species is only found in a valley on one of the Desertas islands, near Madeira, Portugal.
Twenty five spiders were brought back by a zoo keeper last year in an attempt to breed them in captivity.
There are plans to send hundreds of the spiderlings to other zoos in the UK and Europe to set up more breeding groups.
The Desertas wolf spider is classified as critically endangered but is not a protected species.
The species is under threat from a loss of habitat due to invasive grass binding soil where they burrow.
The baby spiders are 4mm in diameter but grow to be black and white adults up to 12cm (5in) in diameter with a body size of 4cm (1.6in).
Bristol Zoo has joined with Instituto das Florestas e ConservaÃ§Ã£o de Natureza and the International Union for Conservation of Nature to develop a strategy to prevent the species becoming extinct.
The zoo's curator of invertebrates, Mark Bushell, said: ""Because this was the first time this species had ever been taken into captivity to breed, it was a steep learning curve. After some of the female spiders were mated, it was an anxious wait to see if they would produce egg sacs.
"We were thrilled when they did, and to see the tiny spiderlings emerge was fantastic - a real career highlight.
"Establishing the world's first captive breeding programme for this species is a fantastic step towards protecting it for the future," added Mr Bushell.


Liverpool boss Brendan Rodgers praised his young players' composure as the Reds beat Middlesbrough in the longest League Cup penalty shootout.

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After a 2-2 draw at Anfield, Liverpool prevailed 14-13 in a shootout in which six players scored twice, to reach the fourth round.
"Our players showed great resilience to keep going," said Rodgers.
"And at the end, when it was needed, they showed wonderful composure with some of our young players stepping up."
Liverpool took the lead after just 10 minutes through debutant midfielder Jordan Rossiter, 17, but Boro equalised when Adam Reach headed in after the break.
Suso drilled home for the Reds in extra time but Patrick Bamford's last-minute spot-kick, after Raheem Sterling gave the ball away and Kolo Toure brought down Bamford, took the tie to penalties.
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The shootout featured 20 successful penalties in a row and equalled the record scoreline in English professional football, set in the Football League Trophy in August 2011, when Dagenham & Redbridge beat Leyton Orient.
"It's a relief to get through," added Rodgers. "We are disappointed with the goals we conceded. We are making too many mistakes at the moment. But what this team has is character and we needed that.
"We were practising penalties last night. We are humble enough as a group to think we would maybe go to penalties because Middlesbrough are a good side and are doing very well, so everyone practised."
The match was a triumph for Liverpool's young players, with Rossiter scoring the opening goal on his debut and 18-year-old Jordan Williams finding the net in the shootout on his first appearance.
Suso, a 20-year-old Spanish forward, scored his first Liverpool goal and netted two penalties before Boro winger Albert Adomah pushed his effort wide to finally bring the cup tie to an end.
"It was a good night for our young players," added Rodgers. "Young Jordan Rossiter at 17 years of age - he could walk to Anfield - he lives just around the corner, and I was delighted for him.
"He got the opportunity and showed wonderful composure to get that finish.
"I was also impressed with young Jordan Williams - he came on and showed real good stature and composure in the game. He is a wonderful footballer and a young player who is developing well.
"And young Suso hasn't had a lot of game time at all, but he has kept working and I thought he was really bright for us when he came on, and took his goal really well."


There is something very musical happening in Thailand in Southeast Asia.

24 March 2017 Last updated at 09:17 GMT
Blind children are performing in their very own orchestra.
When people heard about this new orchestra they started sending money to support them.
The project now has enough instruments for forty children to take part.


A new appeal has been made for households to check if their wood or coal burners have been fitted correctly as hundreds may be "unsafe".

Steven Poole often incorrectly fitted flue connections and failed to supply and fit carbon monoxide detectors.
Before his death, he admitted regularly breaching legal requirements.
Pembrokeshire council said more than 160 people had taken up the offer of a free carbon monoxide alarm out of more than 500 households it wrote to.
"We are still very concerned that there could be many incorrectly fitted stoves in the county, which are potentially dangerous," said Huw George, cabinet member for environmental and regulatory services.
"We also know that there are many customers of SM Poole which were not registered, and therefore we cannot write to them. We are urging them to get their stoves checked as well."


Burglars targeted flood-affected properties in Cumbria, making off with dehumidifiers and electric fans.

The equipment was taken from two properties in Pooley Bridge and one in Watermillock over the weekend. There was also an attempted burglary in Eamont Bridge.
The area was hit by severe flooding caused by Storm Desmond in December.
A Cumbria Police spokesman described the thefts as "despicable", and appealed for information.
The items stolen were two Dri-Eaz dehumidifiers, two DRI-EAZ electric fans, two large Belfort dehumidifiers and one Polygone dehumidifier, with a total value of more than Â£3,000.


Dumfries and Galloway Arts Festival has received funding of £30,000 from the local council.

Organisers said the "unprecedented investment" has allowed them to develop their most ambitious programme to date.
The festival will run over 10 days from 22 May and will include theatre, music, comedy, dance, literature and film.
Programme director Peter Renwick said the grant, from Dumfries and Galloway Council's major events fund, was a "vote of confidence" in the festival.
He added: "I think the festival is really developing what it does and that confidence means we can go to other funders, national funders - Creative Scotland, etc. And that means we are really able to fund a bigger programme and a better programme.
"I think that really comes across this year and people will see changes over the next two or three years and we will really push what we're doing."
Council events champion Colin Smyth said: "The arts festival, like many other festivals and events organisations in the region, is becoming more financially sustainable, dynamic and customer focussed as a result of their own hard work, skills and expertise and the assistance they receive from the unique Dumfries and Galloway major festivals and events strategy.
"It is laying a very solid foundation to attract high numbers of visitors to our region as it grows in scope, prestige and national profile."


Five Polish sailors have been abducted from a ship off the coast of Nigeria.

Polish Foreign Minister Witold Waszczykowski said the men - including a captain and three officers - were kidnapped on Thursday night from the cargo ship Szafir.
Pirates boarded the vessel as it travelled from Belgium to Nigeria, according to Polish media reports.
Eleven other sailors evaded capture, apparently by locking themselves in the engine room.
Mr Waszczykowski said they were safe and their ship had been located about 30 nautical miles off the coast of Nigeria. The exact location has not been reported.
The foreign minister told a news conference on Friday that the kidnappers had not yet established contact.
There is widespread concern about the rise in piracy off West Africa.
The Szafir, owned by the shipping company EuroAfrica, was carrying metal and other items, according to Reuters news agency.


An Air France Airbus has clipped the tail of a commuter plane while taxiing at New York's John F Kennedy Airport.

The smaller Comair jet could be seen turning violently on its wheels as a shower of sparks fell from the impact point just after 2000 on Monday.
The Paris-bound Airbus A380 carried 495 passengers and 25 crew, Air France said. The Comair jet had 62 passengers and four crew. No-one was injured.
The flight recorders from both aircraft will be reviewed, investigators said.
The aircraft were towed to a nearby hangar for inspection by the Federal Aviation Administration.
The National Transportation Safety Board (NTSB) said it was investigating the incident.
"Preliminary reports indicate that the left wing tip of Air France flight 7 struck the left horizontal stabilizer of Comair flight 293 while the Comair airplane was taxiing to its gate," the NTSB said in a statement.
Air France said it would co-operate with the investigation.


In South Korea, selling a "selfie stick" that lets people photograph themselves could mean a fine of up to £17,300 if the gadget is unregistered.

South Korea's radio management agency has issued guidelines outlawing the sale of unregistered selfie sticks.
The law applies to sticks using Bluetooth to remotely trigger a phone to take a picture.
The agency said unregistered sticks might interfere with other devices using the same radio frequencies.
Selfie sticks into which smartphones can be slotted to take snaps of their owners beyond arm's length have proved hugely popular and the most sophisticated versions use the Bluetooth short-range radio technology to trigger a handset's shutter.
Because they use Bluetooth, the devices are considered to be a "telecommunication device" and must be tested and registered with the South Korean agency that oversees such gadgets, an official at the Central Radio Management Office told the AFP newswire.
"The announcement last Friday was really just to let people know that they need to be careful about what they sell," said the official.
The regulations published by the Office can impose fines or jail terms on those making and selling unregistered sticks.
"We've had a lot of calls from vendors who think they might have been unknowingly selling uncertified products," added the radio management office's spokesman.
So far, the new regulations are not being rigorously enforced and there are no reports of the sellers of selfie sticks at attractions in South Korea being targeted by police.
Even the official at the radio frequency watchdog wondered if the new regulation was going to make a difference to the sale of the sticks - whether or not they are registered.
"It's not going to affect anything in any meaningful way, but it is nonetheless a telecommunication device subject to regulation, and that means we are obligated to crack down on uncertified ones," said the spokesman.


British number two Heather Watson dug deep to win 6-4 7-5 against Italy's Camila Giorgi at a rain-affected Aegon Classic in Birmingham.

Their first-round match did not start until after 17:00 BST as downpours delayed the day's play until 15:30.
Watson claimed the only break point of the first set, then saw off six break points for Giorgi in the second.
The world number 55, ranked 11 places higher than Giorgi, will play Barbora Strycova or Karolina Pliskova next.
"I was very focused at the end and I'm so glad we got to play the full match without any rain delays," said 24-year-old Watson.
"She's a very tough opponent and hits the ball extremely hard. I had to accept she will hit a lot of winners but had to take advantage when she made mistakes.
"I feel fully fit and think I'm playing very well."
American seventh seed Madison Keys won 7-6 (7-3) 6-4 against Hungary's Timea Babos in Monday's opening match.
However, British number three Naomi Broady and Australia's Daria Gavrilova were forced off court about 19:00 by more rain.
British number one Johanna Konta and Tara Moore begin their Edgbaston campaigns on Tuesday.
Konta, 25, faces Japan's Misaki Doi, while Moore, 23, plays Austria's Tamira Paszek.
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US and British spy agencies routinely try to gain access to personal data from Angry Birds and other mobile applications, a report says.

A National Security Agency (NSA) document shows location, websites visited and contacts are among the data targeted from mobile applications.
It is the latest revelation from documents leaked by Edward Snowden.
In a statement, the NSA said it was not interested in data beyond "valid foreign intelligence targets".
"Any implication that NSA's foreign intelligence collection is focused on the smartphone or social media communications of everyday Americans is not true," the statement said.
By Gordon CoreraSecurity correspondent, BBC News
From the very start, the Snowden revelations have thrown a spotlight on the tech sector as well as the intelligence agencies.
In some cases, it was clear they were complying with laws - for instance providing metadata - but having to do so secretly. That is something they have now won the right to disclose at least a little more.
In other cases, it appears that some companies might have been doing more than they strictly had to leading to awkward questions.
And in other cases, the intelligence agencies appear to have been hacking into the companies - for instance their internal data links - without knowledge or permission.
The more publicity that this has all attracted the more the companies have distanced themselves from government with expressions of anger and calls for more transparency.
In the case of the latest Angry Birds and Squeaky Dolphin revelations, it appears that NSA/GCHQ are effectively piggybacking off customer data that companies designing software - whether Rovio or Google - collect themselves and without the companies knowing.
This will anger the companies, not least because it may throw a spotlight on just how much personal information they collect from ordinary people who may not have known about it in the past.
The report, published by the  New York Times, ProPublica and the Guardian, says the NSA and Britain's GCHQ have worked together since 2007 to develop ways to gain access to information from applications for mobile phones and tablets.
The scale of data gathering is unclear.
But the reports suggest data is gained from a variety of mapping, gaming and social networking applications, using techniques similar to the ones used to intercept mobile internet traffic and text message data.
The documents also reveal the two agencies are increasingly convinced of the importance of mobile applications data.
The joint spying programme "effectively means that anyone using Google Maps on a smartphone is working in support of a GCHQ system" one 2008 document from the British intelligence agency is quoted as saying.
Another GCHQ report, in 2012, laid out how to extract information from Angry Birds user information from phones on the Android operating system. The game has been downloaded 1.7 billion times across the world.
The British spy agency said it would not comment on intelligence matters, but insisted that all of its activities were "authorised, necessary and proportionate".
Another NSA document described a "golden nugget" - a perfect scenario where NSA analysts could get broad selections of information from the applications, including networks the phone had connected to, documents downloaded, websites visited and "buddy lists".
Other applications mentioned by the documents include the photo-sharing site Flickr, movie-based social network Flixster and applications that connect to Facebook.
Developers are responsible for the information generated from each application, but there was no suggestion firms were actively agreeing to give the spy agencies data.
On Monday, the justice department announced it had reached agreement with five major internet firms over their request to share information about how they responded to orders from the NSA and other agencies.
Google, Microsoft, Yahoo, Facebook and LinkedIn had previously sued the US government over being able to disclose to the public more information on what they have released to intelligence agencies.
Under the compromise announced, the firms will be able to release:
As part of the deal, the firms will delay releases of the number of national security orders by six months.
But tech firms cannot reveal government surveillance of new technology or new ways to communicate that they create for up to two years.
This caveat has been criticised by Ladar Levison - the founder of Lavabit, the secure email service that Edward Snowden used - who said the provision would undermine confidence in start-ups.
"While our courts are allowed to keep ethically dubious court order secret, it will remain impossible to trust private data to American companies," he told the New York Times.
Apple was quick to take advantage of the new rules.
It has revealed that it received between zero and 249 national security orders between 1 January and 30 June affecting between zero and 249 accounts.


There have been further changes at Vogue - with Naomi Campbell, Kate Moss and Steve McQueen taking roles as contributing editors.

They've been hired by Edward Enninful, the magazine's incoming editor-in-chief, who officially takes over on 1 August.
A number of senior figures have left Vogue in recent weeks as he makes changes to the editorial team.
"I am thrilled that Kate, Naomi, Steve and Grace are going to work with us in these new roles," said Enninful in a statement on Vogue's website.
Kate Moss was already a contributing fashion editor and has been with Vogue since 2013, but Campbell and Steve are totally new signings.
Edward and Naomi are good friends - the model even went with him when he was made an OBE last year.
"As two of the biggest international style influencers and supermodels, the impact Naomi and Kate have in today's culture is enormous," Enninful said.
"Being an acclaimed filmmaker and Turner Prize-winning artist, Steve will bring an increased depth to the arts within the magazine."
McQueen is best known for directing Shame and the Oscar-winning 12 Years A Slave.
So... what do contributing editors actually do? Well, that's a bit of a grey area.
Usually, it means you've written enough articles for a newspaper, magazine or online publication be considered a frequent contributor, but not necessarily enough to have a regular column.
However, the press release on Vogue's website doesn't exactly give much detail on what Kate, Naomi and Steve's office hours will be.
The fashion world will be watching with interest to find out, but their involvement alone will be beneficial to Vogue, given the trio's combined star power.
Enninful is also hiring Grace Coddington, his former colleague at US Vogue, as a contributor.
The transitional period at Vogue has not been smooth since current editor Alexandra Shulman announced her departure.
Lucinda Chambers, the magazine's fashion director for the last 25 years, has probably been the most spectacular exit so far.
She gave an interview to Vestoj where she admitted she hasn't read Vogue in years, describing the clothes it features as "irrelevant for most people - so ridiculously expensive".
Deputy editor (and sister of Samantha Cameron) Emily Sheffield followed suit earlier this week.
Read more: Vogue's 'posh girl exodus'
Follow us on Facebook, on Twitter @BBCNewsEnts, or on Instagram at bbcnewsents. If you have a story suggestion email entertainment.news@bbc.co.uk.


Police searching for a woman who has not been seen in public for 17 years say they cannot rule out the possibility that she has come to harm.

Margaret Fleming was only reported missing from her home in Inverkip in Inverclyde six months ago.
But it emerged that no-one except her carers had seen her since 1999.
Officers, who searched the house for months, said she "could have had an accident, possibly wanted to be missing or even something more sinister".
Margaret, who will now be 36, was reported missing by her two carers on 28 October.
However, apart from the carers, the last independent sighting of her was at a family gathering on 17 December 1999, when she was 19.
Police were initially asked to call at the remote house, next to the coast on the road between Inverkip and Wemyss Bay, by social work officers.
Det Ch Insp Paul Livingstone told BBC Scotland: "Police were carrying out routine inquiries on behalf of a partner agency and that's when Margaret was reported missing."
"Given the timescales involved it was passed to ourselves here at Major Investigations Teams."
In the years since Margaret was last seen, there has been no trace of any contact with the outside world.
Margaret, who was said to have learning difficulties, had never had a job and had no presence in the online world.
Det Ch Insp Livingstone said Margaret's bank account had not been accessed for many years but confirmed she was in receipt of benefits.
He said: "The carers managed that for her. They ensured the money that was for Margaret was used for her."
The detective said the property where they lived was a five bedroom house called Seacroft in a relatively remote area of Inverclyde.
Police began a search of the house in November and extended into the garden, where excavation work was carried out on half an acre of land.
Forensic experts said they were sifting through the house and garden to find any documentation, clothing and personal items that could assist in finding her.
Det Ch Insp Paul Livingstone said: "There have been extensive inquiries over the past six months as we try to piece together Margaret's life.
"A team of dedicated officers have been sifting through thousands of items, paperwork, documents, and articles taken from the house.
"We've been in contact with around 1,200 individuals and organisations who may have had contact with Margaret in an effort to trace her and over 200 have still to get back to us so we have some lines of enquiry still to follow up."
The detective said officers had taken 500 witness statements and extended the search to 500 metres beyond the house into nearby water and woodland.
He said the search had now finished.
Det Ch Insp said: "Whilst we are keeping an open mind - her carers state that Margaret has a private side to her life, possibly having friends that they are not aware of - we cannot rule out the possibility that she has come to harm in some way.
"By this I mean that she could have had an accident, possibly wanted to be missing or even something more sinister."
He added: "We remain in contact with Margaret's mother, who understandably is shocked and distressed at her disappearance.
"Her carers have been assisting us with our enquiries, and the strength of feeling and support from local residents in the Inverkip area has been welcomed."
He said Margaret was still being considered a missing person and appealed for anyone who may have seen her since 1999 to get in touch.
28 October 2016 - Margaret Fleming reported missing by her carers. The 36-year-old woman was described as 5ft 5in, with collar length black hair and brown eyes. She is described as being of heavy build.
10 November - Police reveal that Margaret has not been seen in public for 'quite some time'. They appealed for people who knew her when she was at James Watt College in Greenock 20 years ago.
Police launch a large-scale search with police divers deployed and officers are spotted combing a large area of ground near the electricity sub-station in the hillside above the A78.
Police say they have limited information and are unable to issue a recent photograph.
Local residents say they have never seen Margaret.
26 November - Despite numerous appeals and searches by specialist police teams, including the mounted unit, divers and dog branch, there has been no trace of Margaret. Chief Inspector Elliot Brown said: "This has been one of the most challenging missing person inquiries of my career because of Margaret's secluded lifestyle."
30 November - Police search the home of the carers
12 December - Search moves from the house to the garden. Police say that, apart from her carers, the last independent sighting of Margaret was on 17 December 1999, at a family gathering. Officers say they have no trace of her having a job, no friends have come forward and she had had no contact with any agencies. Detective Chief Inspector Paul Livingstone said: "Margaret's carers have said that they believe she has a private side to her life and that she may have friends that they are not aware of."
13 December - Police start to dig up garden.
16 December - Drone footage shows garden being dug up
17 December - Police make fresh appeal exactly 17 years after Margaret was last seen.
21 December - Drones banned from flying over the site
28 April 2017 - Police say search of house, garden and surrounding area is complete but investigations are ongoing


The father of murdered teenager Amanda Duffy has been cleared of exploiting a charity he set up in her memory.

An employment tribunal ruled Joe Duffy was unfairly dismissed from Hamilton-based charity People Experiencing Trauma and Loss (Petal).
He has now been awarded almost Â£40,000 in compensation.
Petal was established by Mr Duffy, 66, and his wife, Kate, after their 19-year-old daughter Amanda was killed following a night out in 1992.
In February, the Crown Office failed in a bid to retry Francis Auld, who stood trial for Amanda's murder but the case was found "not proven" by a jury.
It was hoped a fresh prosecution could take place under Scotland's new double jeopardy laws.
In 2014, Mr Duffy was dismissed from his role as project director with the charity on the grounds of "gross misconduct".
It was claimed that he was guilty of misappropriating Petal funds and property, displaying aggressive behaviour and demonstrating unprofessional conduct towards a charity director.
The charity claimed Mr Duffy profited financially by sourcing water coolers and light bulbs from companies with which he had a financial interest.
Mr Duffy explained that the arrangements through a water cooler business and Speedlamps Ltd were long-standing and were known to members of the charity's management committee.
Employment Judge Shona MacLean concluded: "There was no evidence that the claimant made any profit from providing water coolers to the respondent.
"As regards Speedlamps, Ltd, the claimant was not involved on a day-to-day basis. He was not employed by Speedlamps Ltd. There was no evidence he received any dividend."
It emerged that Mr Duffy has set up another charity but he has received no income from it.
He was not available for comment.
Neil Moore, who is now chief executive of Petal, said he had not personally seen the ruling.
He added:"The judgment is with our legal team and the management committee. We will make a statement when they have had the opportunity to review it."


Two-time world champion Becky James will not compete in the Commonwealth Games because of a knee injury.

The 22-year-old Abergavenny cyclist was one of Wales' main medal hopes for the track events in Glasgow this summer.
"Unfortunately I will be withdrawing from the Team Wales Cycling squad for the Commonwealth Games," said James.
James aggravated the knee injury when she returned to training following a period of rest after a minor medical procedure.
She won two gold medals at the UCI World Championships in 2013, and claimed a silver and a bronze for Wales at the 2010 Commonwealth Games in Delhi.
In a statement issued jointly by British cycling and Welsh cycling, James explained the injury followed a period of enforced medical rest.
"In May, I received abnormal results from a routine smear test and, following the biopsy results, I underwent minor surgery which I'm pleased to say was successful," she said.
"The surgery, however, meant [taking] two weeks away from my usual training regime.
"Following the rest, in an effort to make up for lost time, I aggravated a knee injury that will rule me out of the Games.
"I'm terribly disappointed I won't be competing in Glasgow. I still hope to be there cheering the team on, and I wish the entire team the best of luck."
Matt Cosgrove, performance director at Welsh Cycling said: "Although it is disappointing that Becky will be absent from the Team Wales cycling squad in Glasgow this summer, it is important that Becky now looks after herself and she is on the road to recovery.
"We look forward to seeing her back on the bike and competing in the near future."


Liverpool have signed central defenders Mamadou Sakho and Tiago Ilori for a combined fee of about £25m.

Sakho, 23, who has 14 France caps, will cost around £18m from Paris St-Germain.
Sporting Lisbon's Ilori, 20, has represented Portugal at youth level but is still eligible to play for England because he is born in London.
Sakho told the club's website: "I came here because the project at Liverpool interests me. I'm really looking forward to playing my first game."
He is manager Brendan Rodgers's most expensive signing of the summer and can play in the centre of defence as well as at left-back.
Liverpool managing director Ian Ayre said: "He's an important marquee signing for us. It was a difficult one to do and it was a difficult one for us to get, but I'm very pleased that we've been able to attract him to the club."
Ilori, who cost £7m, said: "Liverpool have a great team and I think it's the place for me to be at the moment.
"There have been some great teams here in the past, the club has won a lot of trophies and I want to be a part of it."
Rodgers has now signed seven players this summer following the captures of defender Kolo Toure, striker Iago Aspas, winger Luis Alberto, goalkeeper Simon Mignolet and left-back Aly Cissokho.
Liverpool prioritised defensive recruitments because Sebastian Coates has been ruled out for most of the season while Toure and Cissokho are also injured.
Sakho and Ilori were both at Anfield on Sunday to watch Liverpool beat Manchester United to move top of the Premier League.
Meanwhile, forward Daniel Pacheco has left Liverpool to join Spanish second tier side AD Alcorcon.
The 22-year-old had struggled to break into the Reds first-team and failed to score in his 17 senior appearances during his six years with the Merseysiders.
He was sent out on loan to Rayo Vallecano, Norwich City and Huesca but has now moved to Alcorcon on a permanent basis.
I will always be a red," tweeted Pacheco. "It's been my house and I will never forget it. Thanks to all you fans for the support and hope we celebrate the Premier League [title] this season."


A man has been jailed for 16 months for crashing his Mercedes into a marquee, injuring 21 people.

Winchester Crown Court heard Peter Bialek was twice the drink-drive limit when he drove into a private ball - attended by 300 people -  at a farm near Nether Wallop in Hampshire.
The 66-year-old, from Salisbury, admitted causing grievous bodily harm and furious driving.
Three people suffered serious injuries in the crash on 3 October.
Bialek was also banned from driving for two years and ordered to pay Â£750 court costs.
One victim, a 65-year-old woman, suffered a fractured ankle, her husband sustained three broken ribs and a 22-year-old woman had cuts to her legs.
The court heard that Bialek and his wife, who had not been drinking, decided to leave the event at 23:00 GMT but their car had been blocked in.
When his wife was unable to manoeuvre out of the space, Bialek took the wheel and careered 20 metres into the marquee, the court heard.
Charles Gabb, defending, said after Bialek stopped the car, he was dragged from the driver's seat and attacked.
Sentencing him, Mr Justice Teare said: "I have given considerable weight to your qualities as a human being, I accept that you are in every other respect a good man but the court has to balance the consequences of your actions that night and the injuries caused to over 20 people, three of whom suffered serious injuries, the effects of which will be with them for some time."
After the hearing, PC Stephen Johnson of Hampshire Constabulary said: "Bialek chose to get behind the wheel that night, despite having consumed alcohol.
"His reckless act of driving into the marquee left many people injured, some seriously, and could have been much worse.
"The sentence given today should serve as a reminder that driving whilst under the influence can have catastrophic consequences. It really is not worth the risk."
The event is understood to have been organised to raise money for a village hall and other charities.
Bialek, of London Road, entered guilty pleas to three counts of GBH without intent and a charge of causing bodily harm by wanton or furious driving at a hearing last month.


Richie Foran says he is discounting rumours about his own job and is fully focused on leading Inverness Caledonian Thistle to safety from relegation.

His club issued a statement on Tuesday denying a report that a board meeting was being held to discuss his future.
"For me, it's not affected me," said Foran ahead of Saturday's visit to Motherwell. "I'm quite strong-minded.
"When you take a job on, you've got to expect criticism, rumours, speculation and lies."
Caley Thistle lie four points adrift of Saturday's hosts after their 3-0 home defeat by St Johnstone, but Foran remains positive about his position - and his side's chances of staying in the Premiership.
"It's not true - there was no board meeting about my future," he said.
"The club have put a statement out, so everything will be done face to face with the chairman. It doesn't get me up or down."
Foran was heckled after the weekend reverse, but the former club captain had no criticism of the fans.
"It's been a long season and fans have been patient," he said. "They were right to boo me off and have a go at me.
"They've been great for me and the team all season, but I deserved criticism on Saturday. I understand it.
"If they can be that bit more patient for the last six games, we'd appreciate it.
"They've surprised me how positive they've been. Don't panic or get frustrated, the wins are coming.
"Us, the players and supporters will enjoy their summer off as we'll still be in the Scottish Premiership."
Foran admits that relegation has been spoken about in the Caley Thistle dressing-room.
"Some have been part of teams before that went down - I was part of it here," he said. "I walked out in the corridor to see staff in tears at losing their jobs.
"It's huge to the city of Inverness to stay in the Scottish Premiership and we will.
"We're going to be fearless in these last six games, get points on the board and end up in a good position."
On Tuesday, Caley Thistle insisted that the club was holding "a routine board meeting".
"The directors, management team, players, staff and supporters remain focused on taking as many points as possible from our remaining six games," said their statement.
"A win at Motherwell this weekend would dramatically improve our prospects and the manager, coaching staff and lads are working hard to achieve this.
"The atmosphere at the club remains positive, with great determination to remain in the top-flight."


Improved signage at the approaches to the Dartford crossing would help to solve congestion, the local MP has said.

Gareth Johnson, Tory MP for Dartford, was speaking after a summit meeting called to discuss traffic problems since toll booths were removed.
He said congestion at the River Thames crossing also caused traffic delays elsewhere in the Dartford area.
Highways England said progress was being made at the crossing.
The free-flow payment system, which saw barriers removed and motorists charged through number plate recognition cameras, came into force in November.
Thursday's meeting included officials from the Department for Transport, Kent Police, Kent County Council and Dartford Borough Council.
Mr Johnson said no one claimed to have a magic wand to solve traffic problems at the Dartford Crossing but getting all parties responsible for running the crossing working together was important.
He called for a review of road signs on the approaches to the crossing "making it clear which lanes are better for lorries".
He said congestion on two roundabouts on the approaches to the crossing also caused "big traffic issues" in Dartford town centre.
"These problems will not be completely resolved until another bridge is built which, in my opinion, needs to be located east of Gravesend," he said.
After Mr Johnson raised the issue in parliament last month, Highways England said journey times had "improved significantly".


A 74-year-old man has appeared in court charged with withholding information about the murder of a former Sinn Féin official and republican informer.

Denis Donaldson was murdered in County Donegal in April 2006, months after being exposed as an agent who worked for the police and MI5 for 20 years.
Patrick Gillespie, of Craigvar Street, Glasgow, is charged with committing the offence between 2006 and 2016.
The accused, who also has an address in Donegal, was remanded in custody.
Mr Donaldson, 55, was once a key figure in Sinn Féin's rise in Northern Ireland politics.
He was shot dead at an isolated cottage near Glenties.


New research suggests that the spread of TB in cattle can only be controlled if more radical measures are adopted.

Culling of entire herds, more testing and cattle vaccination are needed to reverse the spread of the disease.
The lead researcher has told BBC News that the study also confirms research that shows culling badgers will at best slightly slow down rather than stop the epidemic.
The results have been published in the journal Nature.
Prof Matt Keeling of Warwick University, who led the research, told BBC News that computer projections showed that the current measures adopted by the Department for Environment, Food and Rural Affairs (Defra) are unlikely to reverse the spread of TB in cattle.
"Our feeling is that we are going to see a continued increase of 10% per cent a year into the foreseeable future," he said.
Lord Krebs, who developed much of the scientific underpinning to assess the effectiveness of culling badgers to control the spread of TB in cattle said that the study's conclusions "give further support to the view that culling badgers is not an effective strategy for controlling bovine (cattle) TB".
"Instead, the emphasis should be on stopping cattle-to-cattle transmission.  It is to be hoped that Defra takes on board this latest piece of scientific evidence when they formulate their policy for the future," he added.
Defra said it could not accept the paper's findings because it "does not investigate the full range of ways in which TB could spread". A spokesman said a whole herd slaughter when an infection was discovered  would mean killing up to a quarter of a million animals, most of which would not be infected.
The Farming Minister George Eustice said: "What this paper proposes would finish off the cattle and dairy industry in this country."
That was a view echoed by the department's chief scientific adviser Prof Ian Boyd. He said that whole herd culling "would probably result in a rapid decline in the cattle industry in areas where TB occurs".
He added though that he believed the study backed Defra's current TB control strategy which, he said, is "designed to cope with complex and diverse routes of infection."
Prof Keeling and his co-author, Ellen Brooks-Pollock from Cambridge University, said that Mr Eustice and Prof Boyd had misunderstood the point of the study.
In a joint statement they said: "Whole herd culling was investigated as one extreme but was never put forward as a viable policy option."
The aim of the study, they say, is to give Defra some firm figures with which to begin a new cost benefit analysis. This would assess whether any of the approaches, or a combination of them, might be worth trying.
For example, a combination of whole herd culling in hotspots where there is frequent TB infection combined with vaccination, as well as more testing and individual culling might be enough to bring about a reversal in the spread of TB.
Defra is trying to stop the spread of the disease by testing cattle in infected areas and culling only those that are found to be infected.  In addition, herds that have had a case of TB cannot be transported from their farm until two further tests have shown them to be free of TB.
The problem is that the current test often does not pick up animals that are in the early stages of infection. This is why the disease continues to advance slowly but inexorably, devastating the livelihoods of dairy farmers as it spreads across the country.
Last year, approximately 30,000 animals were killed, with testing, slaughter and compensation estimated to have cost the taxpayer about Â£100m per year.
It is for this reason that Defra began two pilot studies last year to assess whether it could cull enough badgers humanely and safely to help curb the disease. TB-infected badgers are thought to be one of the ways the disease is spread to cattle.
An independent analysis for Defra judged that the pilots had failed to kill enough badgers to have any impact on TB infection and that an excess of badgers took too long to die. The department hopes to improve the effectiveness and humaneness of the culls going forward and roll the badger cull policy out to more TB infected areas.
Prof Keeling and his team created a detailed computer model to mimic the observed spread and assess the effect of more radical control measures. The researchers found that only three would have any significant effect.
The model was not able to specifically look at the impact of culling badgers, because there is not enough information about their location, infection and movement. However, the team included an all-encompassing factor to represent infection from environmental effects which includes wildlife.
"Even if you could cull humanely and effectively large numbers of badgers, it is predicted to have a relatively small impact on controlling the number of TB cases in cattle," Prof Keeling told BBC News.
"At best, the reduction in cases would be limited," he said. Prof Keeling's finding is in line with the assessment made by a large scale study carried out in the 1990s known as the Randomised Badger Culling Trial.
But stepping up culling of potentially infected cattle would have a dramatic impact, according to Prof Keeling's model.
If the entire herd is culled once an infection is found, rather than just the animals testing positive for TB, the number of infected cattle across the country could be reduced by more than four-fifths in six years. The disadvantage of this approach though is that there would be mass slaughter of animals in the early years.
This would have a devastating effect on the livestock industry and the cost of compensating farmers could be up to Â£900m in the first year, estimates Prof Keeling.
Another effective option is to test cattle for TB more often. The model suggests that, had there been just one extra round of tests on each farm in 2005, the number of TB cases would have been cut by nearly a quarter by 2010. The downside of this approach is that testing is expensive and initially this strategy would identify more cases, making it appear that TB was increasing which might be politically embarrassing.
Defra has introduced more testing since the study was carried out but, according to Prof Keeling, it is likely that the effect of the new tests will be to slightly slow the advance of TB in cattle rather than stop or reverse it.
"We expect the additional testing to have brought about a slight decline in the rate of increase, but it does look like we need to start thinking a bit wider about how we are going to reverse the spread of this infection and bring it under control," he told BBC News.
The third approach is to vaccinate cattle, which might stall, though not reverse, the increase in TB cases. The disadvantage of this approach is that current regulations forbid the sale of vaccinated cattle.
The National Farmers Union's deputy president Minette Batters said: "No one has ever said culling badgers alone will eradicate bovine TB but we believe wildlife control in areas where TB is endemic along with cattle testing, strengthened cattle movement controls, vaccination of both badgers and cattle when available and where appropriate, and improved biosecurity must be an essential part of any eradication strategy if we are ever going to get rid of this terrible disease."
Dominic Dyer, chief executive of the Badger Trust and a policy advisor to campaigners Care for the Wild, said: "It is now time for the government to call an immediate halt to all future badger culls and to move its focus to the gaping holes in its cattle management policy, which this report shows has allowed TB in cattle to spread."
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Standing in the Rose Garden on Thursday at the White House, President Donald Trump outlined his reasons for withdrawing the United States from the 2015 Paris Agreement on climate change.

More than 190 countries have committed to the deal that aims to reduce global greenhouse gas emissions.
Mr Trump noted the potentially "tens of billions of dollars" that the US was required to spend on the Green Climate Fund - set up to raise money from the wealthiest nations to be spent on environmental projects in developing countries. Established in 2011, 43 countries have now pledged to the fund, raising $10bn (£7.8bn) to date. Mr Trump complained that other countries had not paid and that the agreement was against America's interests.
The US has spent more than any other country. However, there is no obligation for countries to pay into the fund, as it is voluntary.
So far, money from the fund has gone on projects across the world including water conservation in Morocco and helping farmers tackle extreme weather in Sri Lanka.
As Mr Trump noted, the United States has pledged $3bn (£2.3bn) and actually spent $1bn (£776m) so far.
President Obama submitted the second half of that amount only three days before Mr Trump's inauguration.  It came from the State Department's Economic Support Fund (ESF), which finances a range of development, security, counter-terrorism and humanitarian projects to advance political and strategic interests in countries such as Iraq, South Sudan, Colombia and Afghanistan.
Mr Trump said funding was "raided out of America's budget for the war against terrorism". Although money from the ESF could be used in counter-terrorism, it is not the main source of funding for America's war against terrorism - that is the defence budget.
As Mr Trump noted in his speech, one goal of the Paris Agreement was to raise $100bn (£77.7bn) a year by 2020 to support climate action in developing countries, first discussed as a target in 2010. The money would be used to help poorer countries invest in green energy and renewable technology.
The Green Climate Fund is one mechanism set up to raise money to reach that annual target.
US - $3bn (£2.3bn)
Japan - $1.5bn (£1.2bn)
UK - $1.2bn (£931m)
France - $1bn (£776m)
Germany - $1bn (£776m)
Source: Green Climate Fund
The UK has paid about £400m into the fund so far, and Japan nearly half of its pledged amount. However, this does not necessarily paint the same picture if you take the population size of the countries into account. According to the Green Climate Fund's tracker, the US pledge amounts to just over $9 (£7) a person. Sweden's pledge represents almost $60 (£47) per person, the highest out of any country. The UK has proposed almost £15 a person. India and China have not put forward any cash into the Green Climate Fund.
China has made available significant funds for a different fund to help developing countries combat climate change.
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Searchers say they believe they have found the wreckage of a cargo ship which went missing off the Bahamas during Hurricane Joaquin last month.

The 790ft (241m) El Faro disappeared while sailing from Florida to Puerto Rico with 33 crew on board.
A US Navy ship using sonar equipment has now located a vessel at a depth of 15,000ft.
The El Faro sent out a distress signal on 1 October, saying it had lost power and was taking on water.
Debris was spotted in the ocean in the days after it disappeared, and one body was recovered.
In a statement, the US National Transportation Safety Board said a remotely operated vehicle would be deployed "to survey and confirm the identity of the wreckage".
It added that the wreckage was "consistent with a 790ft cargo ship, which from sonar images appears to be in an upright position and in one piece".
The statement went on to say that if the wreckage was confirmed to be the missing cargo ship, attempts would be made to locate and recover the voyage data recorder.


Cambridge United have signed forward Joe Pigott on a one-year deal following his release by Charlton Athletic.

The 22-year-old spent last season on loan at Southend and Luton, scoring nine goals in a combined 43 matches in League One and League Two respectively.
The striker also scored for the Shrimpers in the fourth-tier play-off final victory over Wycombe while on loan at Roots Hall in 2014-15.
He only made two league starts for Charlton before being let go in May.
Find all the latest football transfers on our dedicated page.


McDonald's, facing pressure from increased competition, says it has found a recipe for success in $1 drinks and a new line of high-end hamburgers.

The fast food pioneer had its highest quarterly sales at established stores in five years in the three months to the end of June.
The firm credited its turnaround efforts, which involve remodelling stores and using better ingredients.
Now appetites are returning, said McDonald's boss Steve Easterbrook.
The UK, for example, had the highest monthly sales in its history in April.
"We're building a better McDonald's and more customers are noticing," said Mr Easterbrook, the fast-food giant's British-born chief executive.
The fast food giant has started a move to use cage-free eggs and fresh beef rather than frozen patties for its quarter pounders in the US. It has also scrapped ingredients with high fructose corn syrup and artificial preservatives.
McDonald's shares jumped more than 3.4% after the company released its earnings , which showed profits 28% higher year-on-year, lifted by changes to its real estate portfolio, cost-cutting and other initiatives.
Total revenues remained lower than the same period in 2016, down 3% to $6bn, but momentum was building, the company said.
Mcdonald's, which has more than 37,000 restaurants globally, saw sales at stores open at least 13 months jump 6.6% from 2016, more than double the growth rate a year ago.
"Everyone is working hard to up their game," Mr Easterbrook said suggesting the firm was squaring up to the increasing competition from other fast food chains.
"Our gain will result in pain being felt elsewhere," he said.
McDonald's said customers are responding to new offerings, including a new line of signature sandwiches, such as the BBQ, with bacon, coleslaw and cheddar in the UK.
In the US, McDonald's has also started selling any size of fizzy drinks for $1 and beverages such as smoothies and frappes for $2.
The value options are convincing guests to return more often, it said.
The company is also expanding its delivery and mobile payment options to emphasize convenience.
But getting the basics right is just as important, Mr Easterbrook said.
"We can never underestimate the importance of clean bathrooms, friendly service and hot, fresh food," he said.
In the US, the firm's biggest market, sales at established stores increased 3.9%, compared to 1.8% a year ago.
The UK, Canada, Germany and China were also strong markets, the firm said. The UK had its 45th consecutive quarter of positive comparable sales.


Ecuador has protested to Turkey over an incident in which demonstrators were violently ejected during a speech by visiting Turkish President Recep Tayyip Erdogan in the capital, Quito.

Three women protesters were thrown out of the venue by Turkish security. An Ecuadorean MP was also reportedly injured during Thursday's incident.
Ecuador's foreign minister says the guards' behaviour was "irresponsible".
Mr Erdogan was in Quito to boost diplomatic and trade ties with Ecuador.
As Mr Erdogan prepared to hold a news conference at the National Higher Studies Institute, protesters demonstrated against recent operations by Turkey against the Kurdistan Workers's Party (PKK) militant group.
Inside the hall, when the three women heckled Mr Erdogan, they were set upon by his personal guards and a scuffle ensued. One protester was momentarily placed in a headlock.
According to local media, a member of Mr Erdogan's security entourage attacked a protester as the Turkish president left the building.
And a member of the Ecuadorean National Assembly was reportedly injured while trying to protect the protesters.
Lawmaker Diego Vintimilla posted images on his Twitter account showing himself with cuts to his nose and hands and a bruise on his arm.
Ecuador said disproportionate force had been used by the security guards.  Deputy Foreign Affairs Minister Fernando Yepez has summoned the Turkish ambassador in Quito, urging him to explain the violence.
Ecuadorean Interior Minister Jose Serrano said police had requested that the bodyguards involved in the incident surrender their passports on Friday.
However, Mr Erdogan and his entourage have since left the country. No comments from his government over the incident have been reported.
The PKK is considered a terrorist group by Turkey and its Western allies and has fought a 30-year insurgency in south-eastern Turkey in which tens of thousands of people have been killed.
There have been repeated clashes between PKK separatists and the Turkish army in recent months, and the violence has recently escalated.
Turkey has previously dismissed claims by the PKK that the government is attacking it "to stop the Kurdish advance against Islamic State [in Syria]".


Police have warned the public not to approach a man reported missing from a psychiatric hospital in Dumfries.

Abdul Nabi, 30, is described as black - of Asian appearance - about 5ft 7in tall and skinny, with short curly hair.
Anyone who spots him has been asked to call 999.
Officers were searching land around Midpark Hospital and Maidenbower near the Crichton university and business complex. Premises in the immediate area were alerted.
The search subsequently moved on to the Calside and Georgetown areas of the town and pupils at Georgetown Primary School had their sports day interrupted.
Police dogs and the police air support unit also joined efforts to try to trace Mr Nabi.
"This is a missing person inquiry and we want the public to be alert, however not alarmed," said a spokesman.
"We are asking that if he is seen he is not approached and you contact the police."
Insp Rory Caldow said officers had been carrying out a large-scale search since about 12:30.
"We did have early concerns that he may have been in possession of a knife, however we understand that this is not now the case," he said.
"Mr Nabi is a vulnerable missing man and our concern for the safety of the public centres on the uncertainty of his reaction should he be approached.
"We ask the public to be vigilant and report any sightings, without making an approach to him, on the 999 emergency number."


A key architect of the NFL's 'Rooney Rule' believes British football "has nothing to lose" by adopting a similar regulation.

The rule requires teams to interview at least one black or minority ethnic candidate for a head coach vacancy.
There are only two black managers in the Premier League and Football League.
Dan Rooney, 82, told BBC Radio 5 live: "I would tell British clubs that if they would look at this openly they will find this is a positive thing."
Rooney, owner of Pittsburgh Steelers and chairman of the NFL's Workplace Diversity Committee, which proposed the regulation in 2002, says it would open doors for clubs when looking at additional candidates for a job.
"The plus side of this is you're increasing your list of people to look at and it would really work. I couldn't recommend it enough for the teams in Britain," he said.
"It may take a little bit of work. But it would be a plus to the teams, to the league itself. When you think about it they have nothing to lose."
Media playback is not supported on this device
His comments come after the head of the players' union, Gordon Taylor, told BBC Sport last week there was a "hidden resistance" from English clubs to hiring black managers.
Keith Curle, at Carlisle, and Huddersfield's Chris Powell are the only two black managers within the 92 Premier League and Football League clubs.
Those who support English clubs adopting the 'Rooney Rule' say the fact that 25% of players are black or minority ethnic means there should be greater representation at management and senior coaching level.
Rooney believes clubs and leagues now need to show leadership over the issue.
"It's not going to force teams to hire anybody. That's their decision and they have to do a good job," he added.
In a statement, the Premier League said: "The situation that brought about the introduction of the 'Rooney Rule' in the NFL is markedly different to football. But our ultimate goal is the same.
"What we want to achieve, by working with the FA, Football League, managers and coaches, is more and better coaches coming through the English system who can progress to the highest levels of the game on merit and regardless of race, ethnicity, gender or background."
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Following a threat of legal action from an organisation of activists, the NFL created the Workplace Diversity Committee.
That committee proposed the rule, with Rooney saying that at the time just 6% of head coaches in the NFL were black - by 2006 that number had increased to 22%.
Cyrus Mehri - one of the lawyers who helped devise and introduce the Rooney Rule in the NFL - has called on UK Prime Minister David Cameron to hold a conference with club owners.
"I don't think we need legislation as much as we need leadership. There's been a failure of leadership throughout the game in the UK," said Mehri.
"I'm calling right now for people of good will to call on the Prime Minister of the United Kingdom to hold a conference where he brings in the top stakeholders."
Former Birmingham and Derby defender Michael Johnson made more than 550 Premier League and Football League appearances in an 18-year playing career.
But he told BBC Radio 5 live that since retiring in 2009, and despite having all the necessary qualifications, he had found it impossible to get a job in management.
"I'm a pro license qualified coach," he said. "I've gone through a governance course. I'm on the LMA diploma in football management. I can't get any more qualified.
"But I've been out of football work in a full-time capacity for three years.
"I've sent over 30 CV's of and got two interviews. For me, there's something wrong there."
BBC Radio 5 live are hosting a debate on the Rooney Rule from 0900-1000 BST on Friday, 3 October.


A driver accused of causing the death of her love rival in a car crash denied "cutting her up" during a previous incident.

Sophie Taylor, 22, died when her car hit a block of flats in Adamsdown, Cardiff, in August 2016.
Cardiff Crown Court heard her BMW crashed while being followed by Melissa Pesticcio, 23, and her ex-boyfriend Michael Wheeler, 22, in separate cars.
Miss Pesticcio, of Marshfield, denies causing death by dangerous driving.
Wheeler, 23, has already admitted causing death by dangerous driving and causing serious injury.
Christopher Rees, defending, asked: "Did you follow behind Sophie Taylor's car?" and Miss Pesticcio replied: "Yes", but when asked whether she was driving at speed, she said: "No".
The court previously heard from prosecution witness, Georgia Flavin, that Miss Pesticcio drove in front of Miss Taylor's car in another incident and broke abruptly, causing her to perform an emergency stop.
But Miss Pesticcio denied "cutting up" Miss Taylor on that occasion.
She denies causing death by dangerous driving, causing serious injury by dangerous driving and two other charges of dangerous driving.
The trial continues.


Lisnagarvey and Monkstown maintained their unbeaten starts to the Irish Hockey League with away wins over Pembroke Wanderers and Railway Union.

Meanwhile, in Saturday's Ulster derby, Banbridge comfortably beat Instonians.
Women's champions Hermes-Monkstown beat Pegasus in a repeat of last season's league final while Cork Harlequins also made it three wins out three.
Ulster Elks recorded their first win of the campaign over Belfast Harlequins while Ards lost to  Loreto of Dublin.
Lisnagarvey have now lost just once in 21 league games, a sequence dating back to the start of the last campaign.
Pembroke Wanderers put up stern resistance but goals from James Lorimer and captain Daniel Buser gave Garvey a 2-0 lead going into the final quarter.
A penalty stroke, converted by Irish international Alan Sothern, made the last few minutes a tense affair but the visitors held on to make it nine points out of nine so far this season.
Monkstown are the only other club with a 100% record after three games following their 7-1 victory at Railway Union
Banbridge warmed up for hosting the first round of the European Hockey Championship next weekend by beating Instonians, who remain bottom without a point, 4-1 at Havelock Park.
Hugh McShane, Frazer Mills, Eugene Magee and Matthew Allister got the goals for Bann with Stephen Kelso replying for Inst.
Banbridge remain in third place, two points behind the leaders.
Anna O'Flanagan continued her hot scoring start to the new season with a 64th minute winner for Hermes-Monkstown as they beat Pegasus 1-0 in Dublin.
Cork Harlequins beat Pembroke 4-2 to join Hermes on top of the table as the fourth unbeaten side going into the weekend, Railway Union, lost at home to UCD.
Ulster Elks got their first win of the season in dramatic fashion as they came from behind to beat Belfast Harlequins 2-1.
Amy Geddes gave Harlequins the lead but Chloe Mitchell equalised and with virtually the last play of the match Emily O'Leary deflected in the game winner.
Ards remain without a point alongside Harlequins and Pembroke after a 4-1 defeat by Loreto - Katie McKee with a late consolation for the Ulster side.


Ireland's Olympic boxing woes continued as lightweight David Oliver Joyce bowed out in the last 16 of his division against Azerbaijan's Albert Selimov.

The Azeri fighter, silver medallist at last year's World Championships, proved far too elusive for the Mullingar man.
Selimov won on all three judges cards and the Irishman could have few complaints with the unanimous verdict.
Joyce's defeat came after news that team-mate Michael O'Reilly had opted not to contest a failed drugs test.
Middleweight O'Reilly, 23, is now out of the Games after being handed a suspension.
In a statement handed to Irish broadcaster RTE, O'Reilly said he unintentionally took a supplement that may have contained a banned substance.
On Monday, big Irish medal hope Paddy Barnes made a shock exit in the light-flyweight division as he was edged out by Spain's Samuel Carmona.
Barnes, who won bronze medals at the last two games, said that difficulties in making the 49 kilogram limit had left him totally bereft of energy during the contest.
Joe Ward will hope to give the Irish boxing team a badly needed boost by accounting for Ecuador's Carlos Mina in the light-heavyweight division on Wednesday evening (23:15 BST).
Westmeath fight Ward reached the final at last year's World Championships in Doha and is regarded as a strong Irish medal hope in Rio.
Ireland's other fighters still in the tournament are defending women's lightweight champion Katie Taylor and Northern Ireland trio Michael Conlan, Steven Donnelly and Brendan Irvine.
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Republican presidential candidate Donald Trump has said he believes the FBI may have found the "motherlode" of Hillary Clinton's emails.

At a rally in Grand Rapids, Michigan, he said he hoped the Democratic candidate's 33,000 deleted messages could now be recovered.
The FBI is investigating new emails that may be linked to its probe into Mrs Clinton's private email server.
Mrs Clinton later told a rally she had nothing to hide.
It emerged in March 2015 that Mrs Clinton had been breaking federal rules by operating a private email server while she was secretary of state from 2009-13.
Her lawyers combed through the server and provided the State Department with 30,000 work-related emails.
But her campaign deleted another 33,000 messages, saying they were personal in nature.
FBI Director James Comey concluded in July that Mrs Clinton had been "extremely careless" in handling classified information, but there were no grounds for any charges.
But on Friday, he told Congress he had learned of fresh emails which might be "pertinent" to its previous inquiry and renewed the FBI probe.
The latest emails were found in a separate investigation into allegations that former congressman Anthony Weiner sent illicit text messages to a 15-year-old girl in North Carolina. Mr Weiner is married to top Clinton aide, Huma Abedin.
The FBI has reportedly obtained a warrant to search the cache of emails belonging to Ms Abedin, which are believed to have been found on her estranged husband's laptop.
There are reportedly 650,000 emails to search through on the laptop, but it is unclear who sent or received the emails or what they were about.
"That's the motherlode," said Mr Trump. "I think you're going to find the 33,000 (emails) that are missing."
He added: "Thank you, Huma. Thank you, Huma. Good job, Huma. Thank you, Anthony Weiner."
But Mrs Clinton told a rally in Kent, Ohio, that the FBI was welcome to check her aide's emails.
"They should look at them and I'm sure they'll reach the same conclusion they did when they looked at my emails for the past year: there is no case here."
Democrats have angrily demanded that the embattled Mr Comey rapidly make public what the agency knows about the new email trove.
The White House said on Monday it would neither defend nor criticise the FBI decision.
Obama spokesman Josh Earnest said the president did not suspect Mr Comey of trying to secretly influence the election through his announcement on Friday of the inquiry.
Mr Earnest said Mr Comey is "a man of integrity, a man of character, a man of principle and he has a very difficult job".
On Sunday, Democratic leader in the US Senate Harry Reid accused Mr Comey of violating an act which bars officials from influencing an election by revealing the bureau was investigating emails possibly linked to Mrs Clinton.
Who is ahead in the polls?
50%
Hillary Clinton
44%
Donald Trump
Last updated October 25, 2016


David Fox's first goal for Plymouth Argyle 10 minutes from time saw them into the hat for the second round of the FA Cup after a hard-fought win at Mansfield Town.

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The Stags dominated for long spells and had the best of the chances, but twice found themselves behind.
For the second successive home game the Stags lost possession and were punished on the counter-attack as Jordan Slew ran onto the ball in his own half and raced clear on 14 minutes, leaving Jamie McGuire in his wake, and he slotted home across Brian Jensen and off the far post.
It was their only effort of the half with Argyle keeper Luke McCormick by far the busier.
He stopped a tame early Matt Green effort, tipped away a curling James Baxendale shot, made a fine block from Ashley Hemmings and watched a Mitch Rose blast sail over the bar.
But Mansfield were level on 58 minutes as Green flicked on a Rose cross and Hemmings blasted home a rising shot under the far angle from the far post.
Hemmings twice came close to another, firing just wide and hitting a post.
But the Pilgrims, who have only lost once in 16 games snatched it as Slew fed Fox to fire home an excellent finish from 18 yards.
Report supplied by the Press Association.
Match ends, Mansfield Town 1, Plymouth Argyle 2.
Second Half ends, Mansfield Town 1, Plymouth Argyle 2.
Delay over. They are ready to continue.
Delay in match Sonny Bradley (Plymouth Argyle) because of an injury.
Malvind Benning (Mansfield Town) wins a free kick on the right wing.
Foul by David Ijaha (Plymouth Argyle).
Foul by Malvind Benning (Mansfield Town).
Ryan Donaldson (Plymouth Argyle) wins a free kick on the right wing.
Yann Songo'o (Plymouth Argyle) wins a free kick in the attacking half.
Foul by Darius Henderson (Mansfield Town).
Foul by Darius Henderson (Mansfield Town).
Ben Purrington (Plymouth Argyle) wins a free kick on the right wing.
Foul by Darius Henderson (Mansfield Town).
Yann Songo'o (Plymouth Argyle) wins a free kick in the attacking half.
James Spencer (Plymouth Argyle) is shown the yellow card for a bad foul.
Krystian Pearce (Mansfield Town) wins a free kick on the left wing.
Foul by James Spencer (Plymouth Argyle).
Substitution, Mansfield Town. Danny Rose replaces Lee Collins.
Yann Songo'o (Plymouth Argyle) wins a free kick on the left wing.
Foul by Malvind Benning (Mansfield Town).
Attempt saved. Rhys Bennett (Mansfield Town) right footed shot from outside the box is saved in the centre of the goal.
Substitution, Plymouth Argyle. David Ijaha replaces Jordan Slew.
Attempt missed. Ashley Hemmings (Mansfield Town) left footed shot from the left side of the box misses to the right.
Substitution, Mansfield Town. Darius Henderson replaces James Baxendale.
Goal!  Mansfield Town 1, Plymouth Argyle 2. David Fox (Plymouth Argyle) right footed shot from outside the box to the bottom left corner. Assisted by Jordan Slew.
Foul by Yann Songo'o (Plymouth Argyle).
Matt Green (Mansfield Town) wins a free kick in the defensive half.
Corner,  Plymouth Argyle. Conceded by Chris Clements.
Corner,  Plymouth Argyle. Conceded by Malvind Benning.
Corner,  Plymouth Argyle. Conceded by Krystian Pearce.
Substitution, Mansfield Town. Jack Thomas replaces Mitch Rose.
Mitch Rose (Mansfield Town) wins a free kick in the defensive half.
Foul by Ben Purrington (Plymouth Argyle).
Attempt missed. Graham Carey (Plymouth Argyle) left footed shot from outside the box is too high.
Attempt missed. Yann Songo'o (Plymouth Argyle) right footed shot from outside the box is high and wide to the right.
Attempt saved. Ashley Hemmings (Mansfield Town) left footed shot from outside the box is saved in the top left corner.
David Fox (Plymouth Argyle) wins a free kick in the defensive half.
Foul by Rhys Bennett (Mansfield Town).
James Baxendale (Mansfield Town) wins a free kick in the attacking half.
Foul by David Fox (Plymouth Argyle).


The feasibility of the government's plans to replace out-of-date prisons with new buildings depends largely on the size of the prison population, which is notoriously hard to predict.

Prisons can't be closed unless there is appropriate prison capacity elsewhere or unless the overall jail population is falling - and there is no sign that it is.
It is currently 85,884 - but it is not rising as quickly as predicted a year ago, when the last official population projections were published.
It was estimated then that by June this year the population would be between 87,100 and 88,900.  In fact it was around 86,000, which may have given ministers more confidence that their plans can be achieved.
The projections said that by 2020 the population could be anything between 81,400 and 98,900, with the "central scenario" - the most likely - suggesting it would be 90,200.
If the population did edge towards the upper estimates it would be extremely hard for the government's plans to work. They would need to build thousands of extra places, as well as replacing old ones.
New prison population forecasts are due to be published this month.
As for the closures, it's long been speculated that Pentonville, in north London, might be closed. It was heavily criticised by inspectors earlier this year.
Other possible candidates for closure in London include Wormwood Scrubs, Brixton and Wandsworth. Leeds, Manchester and Liverpool are all old prisons, which are known to be very expensive to run.
Dartmoor Prison has already been earmarked for closure. As well as Reading - which the Treasury has said will be first to be sold - several jails are currently unused and could also be sold off.
They include Dover, which was until recently an immigration removal centre, and Downview Prison, in Surrey, which was a women's prison.
But building prisons takes many years.
Plans for a new prison in north Wales were first made public in January 2013, but the proposals were under consideration before that. The new jail, in Wrexham, is not due to open until 2017.
Sites have to be identified and planning permission has to be granted before construction work can even start.
These are ambitious plans.


A cloud of foul-smelling but harmless gas has leaked out of a factory in north-west France, prompting complaints from Paris to southern England.

The leak is blamed on a chemical factory near Rouen. Many residents compared the odour to diesel fumes or rotten eggs.
Police, health officials and the gas emergency line in England received thousands of calls from worried people.
The gas is mercaptan, added to natural gas to give it a smell.
It enables people to detect leaks of normally odourless natural gas.
The chemical escaped from the factory 75 miles (120km) north-west of Paris on Monday.
Winds blew the cloud over northern France on Monday night and then into England.
Police in Kent and Sussex said they received calls early on Tuesday.
Then the UK's Health Protection Agency (HPA) and police said reports had started coming in from Surrey.
London Fire Brigade started receiving calls by Tuesday afternoon and later complaints also came from residents in Hampshire, Dorset, Oxfordshire, Northampton and the East Midlands.
The National Grid, which would normally deal with up to 10,000 calls a day to its gas emergency phone line, had received more than 100,000 calls by 14:00 GMT.
A spokesman said it was an "unprecedented" volume.
Kent Fire and Rescue Service advised residents to keep doors and windows closed if they had concerns, or were elderly or asthmatic.
But area commander Martin Adams said there were no serious concerns and he urged people not to call the fire service.
One resident in Cheriton, east Kent, said there had been reports of a strong smell in Ashford, Lydd and Hythe.
Tania Bartlett told the BBC that people "all over Facebook" were talking about it.
Canterbury resident Andrew Roberts said: "Just stuck my head out of the back door here in south Canterbury - strong smell of fuel oil in the air."
Sussex Police said it had been receiving reports of a gas smell along the East Sussex coast.
The force said Kent Police had also received a larger number of calls.
In a statement, a Sussex Police spokesman said: "We understand that this smell emanates from an accidental factory discharge in Rouen.
"The smell is from an additive to the gas which has an unpleasant aroma but is not toxic and there is no danger to the public."
The HPA said in a statement: "The smell drifting over southern England today poses no risk to public health.
"The odour, which is similar to rotten eggs, has been noticed by people mainly in Kent, East and West Sussex and some parts of Surrey."
It said the non-toxic chemical which had blown across the Channel would also have been diluted before entering the air over England.
In France, Tuesday evening's football match between Rouen and Marseille has been postponed because of the smell.
Staff at the factory, run by a French subsidiary of the US chemicals manufacturer Lubrizol, are working to stop the leak.
Southern Gas Network said it had spoken to the company on Tuesday afternoon.
"They've told us the work on fixing the leak starts this evening and they're hoping to have fixed it by tomorrow morning," said a spokeswoman.
"As to how soon the smell dissipates it hard to say."


The troubled health board serving north Wales will remain in special measures for two years, Deputy Health Minister Vaughan Gething has announced.

Betsi Cadwaladr health board's chief executive Prof Trevor Purt, suspended since June, is stepping down.
The board has been under the highest possible level of Welsh government intervention for four months.
A report in May found "institutional abuse" at the Tawel Fan mental health ward in Glan Clwyd Hospital.
In June, it emerged there was a fraud investigation into aspects of the board's spending plans.
On Thursday, Mr Gething said "longer-term plans" were needed to build on "this initial phase of stabilisation in order to tackle more fundamental challenges, particularly to improve mental health services in north Wales".
"Whilst I recognise this is a difficult time for the organisation, I want to put on record the feedback has been extremely positive on the response from staff," he said.
"Their dedication and energy will be critical to tackling the challenges ahead in delivering day to day and improving the services for the population of north Wales."
Betsi Cadwaladr chairman Dr Peter Higson said: "I am pleased that the deputy minister has recognised the progress we have made in a number of key areas.
"The board knows that there is a great deal to do as we develop the health service which the people of north Wales need and deserve."
Interim chief executive Simon Dean said: "Progress is being made in a number of key areas identified when special measures were announced four months ago.
"I know that, working together, the organisation will address the current challenges with confidence and ambition."
In a statement, the board confirmed that suspended chief executive Mr Purt had stepped down and was "considering the process for the recruitment of a successor".
"He will return to work in England where he will contribute to a number of NHS projects including the wider integration both across partner organisations and within the NHS more generally," the statement said.
"He will build on the experience he has gained over six years in the Welsh NHS system."
The head of the north Wales patients' watchdog, the community health council, welcomed the news the board was staying in special measures for two years.
Geoff Ryall-Harvey said the problems were never going to be resolved in 100 days.
"It took them years to get to this and it'll take them at least two years to get out of it," he said.
Welsh Conservative Shadow Health Minister Darren Millar said the decision "reflects serious concerns over the pace of progress at the health board in recent months".
He said it "suggests that the Welsh government is far from confident that swift improvements can be made".
Plaid Cymru AM Llyr Gruffydd said the issues that led to special measures were "ultimately down to Labour's mismanagement of our NHS".
Liberal Democrat Aled Roberts said the board's position showed the "scale of Welsh Labour's failure to effectively oversee the Welsh NHS".


An increasing number of senior staff are working part-time, according to a study by Timewise, a group which campaigns for flexible working.

One in six of those who earn more than Â£40,000 a year now work fewer than five days a week, the study said.
That represents a rise of 12% over the past two years.
The trend towards job sharing is also increasing, with senior staff at the Ministry of Defence, the Guardian and Lloyds Bank all benefitting.
The study includes a Power Part Time list, which details the 50 most senior workers in the UK who work part-time.
Nine of those people work in job shares, the highest number to date.
"The dramatic increase in job shares on this year's Power Part Time List, offers us a glimpse into how jobs will be designed in the future," said Karen Mattison, one of the joint co-founders of Timewise.
"All it takes is an open minded employer who is prepared to try something new in a bid to hire or keep the best people, and an innovative solution is born."
In the UK as a whole, 8.5 million people work in part-time jobs, equating to one in four workers, according to the Office for National Statistics.
Timewise said its research indicated that 86% of those actually wanted to work part-time, to fit in with something else in their life, such as caring for a child or relative.
However, those who analyse employment figures have previously suggested that many of those working part-time are doing so only because they cannot find a full-time job.
Two senior employees from Lloyds Bank are on Timewise's list for the first time: Alix Ainsley and Charlotte Cherry are joint HR directors at the bank, leading a team of 30 staff, and they each work three days a week.
Other high profile part-time workers include Caroline Lucas and Jonathan Bartley, who are joint leaders of the Green Party, and Sarah Ellis, the head of marketing strategy at Sainsbury's.


Storm Gertrude has caused damage and disruption, with gusts reaching more than 100mph in Shetland.

Across Scotland, schools have been shut, homes have lost power, trains, flights and ferries have been cancelled and bridges were closed.
An earlier amber warning has now become a yellow alert for wind and snow which covers much of the UK.
The Scottish Environment Protection Agency (Sepa) issued more than 40 flood warnings.
The storm raged across Scotland through the morning with Shetland bearing the brunt of the high winds in the afternoon.
Loganair said 11 flights in and out of Shetland scheduled for Friday have been cancelled because of the weather.
The airline said passengers could find information on its website about rebooking flights.
In Edinburgh, a man in his 30s sustained head injuries when he was knocked down by flying debris.
He is in a stable condition and being treated at Edinburgh Royal infirmary.
Trains between Edinburgh and London were delayed with some east coast services north of Newcastle cancelled altogether, after high winds resulted in damage to overhead power lines along the route to Berwick.
ScotRail has announced a raft of cancellations and reduced services for Friday.
Network Rail said flooding at Dalguise viaduct near Pitlochry had shut the line between Perth and Inverness.
The weather has caused major travel disruption for drivers with bridges being closed across Scotland. The Forth Road Bridge, Tay, Kessock, Skye and Erskine Bridges have now reopened to cars but remain closed to high-sided vehicles.
An HGV overturned on the M9 at Craigforth, just outside Stirling, and the emergency services were called out to lorries blown over on the A96 near Huntly, the M9 near Dunblane and the A90 between Glamis and Forfar.
In Edinburgh, a tree fell on to the roof of a bus on Corstorphine Road, although no injuries were reported and in Aberdeen drivers had to avoid a trampoline blown on to the Newtonhill flyover near the A90 at about 06:00.
A landslide closed the A82 between Spean Bridge and Invergarry for a while, leading to a 154-mile diversion.
Strong winds and lightning strikes left thousands of people without electricity.
Scottish Hydro repair crews have restored power to 11,000 customers but 2,800 homes and businesses remained disconnected late on Friday afternoon.
West coast ferry operator Caledonian MacBrayne said all 26 routes had been affected either by cancellations or delays.
All schools on the Western Isles, Orkney and Shetland are closed along with a number of schools in the Highlands.


Airline group IAG, the owner of British Airways and Iberia, says the weak pound cost it €162m (£145m) in the third quarter of the year.

Operating profits in the July to September quarter fell 4% to €1.2bn.
The airline said it expects operating profits for the full year to be up by about 7%, a lower rate than the one it forecast in July.
There was a raft of cost increases, including employee costs up by 1.6%, and handling and catering up 7.5%.
The company said the increase reflected additional compensation fees and baggage claims related to operational disruptions, including air traffic control strikes in France.
Its lower profits guidance follows similar moves form rivals Easyjet and Ryanair.
Despite that, Willie Walsh, IAG's chief executive, said the quarterly performance had been a "strong" one.
However, he added that the results had been affected by the "tough operating environment", including the impact of the weak pound and disruption from strikes.
Mr Walsh said: "At current fuel prices and exchange rates, IAG expects its operating profit for 2016 to be around €2.5bn, and has seen no significant change in its short-term trading conditions."
The group said it had seen "weak trading conditions" in June - both before and after the Brexit vote - with the majority of the weakening demand affecting its premium cabins.
The results follow a new pension arrangement, announced on Wednesday, which caps any extra contributions British Airways could be forced to make to the fund. That is expected to give BA more room to pay dividends to parent IAG.
IAG shares closed 4.8% higher at 433.5p, but have fallen 28% since the start of the year.