The number of people dying from now-banned legal highs rose sharply between 2009 and 2010, new figures have shown.

A report for the National Programme on Substance Abuse Deaths revealed 43 people in the UK died after taking now-outlawed methcathinones in 2010, compared with five in 2009.
The group includes mephedrone or "meow meow", which alone caused 29 deaths.
Overall, drug-related deaths fell by just under 14%, with Brighton having the highest rate, at 14.8 per 100,000.
The total number of deaths from drugs throughout the UK fell from 2,182 in 2009 to 1,883 in 2010.
The National Programme on Substance Abuse Deaths (NPSAD) said heroin-related deaths fell "significantly". In 2010, it was involved in 41% of all drug-related fatalities, compared to a proportion of 53% the previous year.
The annual report for NPSAD was compiled by the International Centre for Drug Policy (ICDP) based at St George's, University of London.
The team looked at drug-related deaths that had been formally investigated by the authorities, based on information from coroners, police forces, and the Northern Ireland Statistics and Research Agency.
The study concluded that former legal highs, such as meow meow, "tightened their grip on the recreational drug scene in western Europe but especially the British Isles".
It went on: "It is now difficult to gauge with any certainty what will be the next 'big thing' that will capture the attention of the experimenter or regular recreational drug user."
One of the report authors, John Corkery, said a dip in deaths from opiates such as heroin in 2010 could have been down to the popularity of mephedrone and other methcathinones.
He said: "They were thought to be less dangerous as they were promoted as legal.  Of course, legal does not mean safe.
"Mephedrone is still causing deaths in 2012, and new substances are being identified all the time.
"These drugs are not tested, we do not necessarily know what the effects will be," he added.
While England, Scotland and Wales each saw a drop in drug-related deaths, Northern Ireland saw a slight rise - from 65 to 72.
The majority of deaths (72%) across the UK were among men aged between 25 and 44-years old.  More than half of deaths (64%) occurred after an accidental overdose.
Professor Hamid Ghodse, director of the ICDP, welcomed the general fall in drug-related deaths but warned that finding "prevention strategies" is still a priority.
"It should not make us complacent as there are indications that there is still a general upward trend in fatalities involving emerging drugs such as mephedrone and prescription drugs such as methadone.
"This is a great concern and it is clear that much work is still required in improving access to effective treatment and rehabilitation services and most importantly, finding prevention strategies to stop people being at risk in the first place," he said.
Leading anti-drug charity Addaction also welcomed the drop in deaths, but said remained concerned about the developing use of less "established" drugs.
Simon Antrobus, the charity's chief executive said: "We need to acknowledge that drug use in the UK is changing.
"Developments, such as the ability to buy drugs over the internet, mean that some of this change has been at an astonishing rate.
"Some of the deaths reported will relate to substances that have only appeared in the past couple of years, rather than to 'established' drugs such as heroin.
"We see the use of these 'legal highs' with an increasing frequency in our services, and are concerned at the further damage their long-term use will cause."
Methcathinones were classified as class-B drugs in 2010, losing their "legal high" status.
The government announced on Thursday that two new legal highs, "black mamba" and methoxetamine or "mexxy"  are to be criminalised.


Cue Card powered away from the 2015 Cheltenham Gold Cup winner Coneygree to claim a third victory in the Betfair Chase at Haydock.

The 15-8 favourite, trained by Colin Tizzard, took control at the last fence and won by 15 lengths, with Vezelay (50-1) third.
Jockey Paddy Brennan said: "He's a dream - a privilege to ride him."
Cue Card will claim a £1m bonus if he also wins the King George and the Cheltenham Gold Cup this season.
The ten-year-old almost landed the hat-trick last season when winning the Betfair Chase and King George VI Chase before falling in the Cheltenham Gold Cup.
"There's a responsibility to riding a horse like Cue Card," Brennan told BBC Sport.
"I'm not saying he's Kauto Star, but he's got an aura and he's got a following by so many people that I feel lucky.
"I felt it got away a little in the Gold Cup but after today I think we have a chance of putting that right.
"When I hacked to the start I knew things were going to be different today; he was the Cue Card I know.
"When he's on that form today you can ride any way you want - he's different class."
Coneygree did not go down without a fight on his return from an absence of 377 days.
He led to four out under Richard Johnson, but Cue Card decimated the field with his speed and stamina.
Two-time Betfair Chase winner Silviniaco Conti (13-2) was fourth.
Cornelius Lysaght, BBC horse racing correspondent
Defeat at Wetherby in October left some fans of Cue Card a little shaken, but not Colin Tizzard, and that faith was vindicated with a scintillating success over the gallant Coneygree.
Sticking to the inside of the track he put in a command performance, quickly putting the race to bed after leading at the fourth-to-last fence.
Those around him are looking, of course, to the next legs of the Triple Crown, the King George VI Chase and Cheltenham Gold Cup, but particularly Cheltenham after he fell late on there last time. After a lay-off and against a top horse that was race-fit, Coneygree can be said to have run an absolute 'screamer' in second.
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England survived a mid-innings wobble to beat West Indies by four wickets in the second one-day international and win the series with a match to spare.

Liam Plunkett took 3-32 as West Indies, despite 50 from Jason Mohammed, were bowled out for 225 in 47.5 overs.
Jason Roy (52) put England on top but home spinners Ashley Nurse (3-34) and Devendra Bishoo (2-43) hit back.
However, Joe Root (90) and Chris Woakes (68) put on an unbeaten 102 to see England home with 10 balls left.
Batsmen needed to play patiently on a slow wicket at the Sir Vivian Richards Stadium - the same one used in the first match on Friday - but only new Test captain Root and all-rounder Woakes really mastered the conditions.
Root's typically composed innings, which featured just three boundaries in 127 deliveries, and Woakes' more adventurous 83-ball knock guided England to an 11th win out of their last 12 completed ODIs against West Indies.
Root was named man of the match but Woakes was perhaps equally deserving of the award having also recorded figures of 0-26 from eight accurate overs with the ball.
Eoin Morgan's team, who won the first match by 45 runs, will seek to make it 3-0 in the final match in Barbados on Thursday.
England captain Eoin Morgan: "I thought the bowlers did an outstanding job again, building on what we did on Friday. In the field we were a bit sloppy and the chase wasn't ideal, but we knew it would be tough.
"Jason Roy played well at the start but where we lost a few wickets was a bit of a concern. But the partnership of 102 between your opening bowler and best batsman - you have to take your hat off to them.
"Woakes is a guy who keeps giving to the team and a man who often goes without the majority of the praise and that's just his character. We don't want to rely on him too much but he is a luxury down the bottom of the order.
"We want to win all three games, we will be putting out our best 11 in Barbados."
England's reply got off to a poor start when Sam Billings, facing his first ball and the second of the innings, was caught at first slip.
Roy was almost out to a sensational diving catch by Carlos Brathwaite and then survived a close review for caught behind.
The Surrey opener brought up his ninth ODI fifty from 46 balls, before off-spinner Nurse had him caught on the boundary for the first of his three wickets.
After a shaky start Root started to find the gaps but West Indies' slow bowlers brought their side back into the match with four wickets for 16 runs.
Morgan, who made a century in the first ODI, fell leg before for seven, Ben Stokes was caught behind for one, Jos Buttler departed for a seven-ball duck and Moeen Ali was bowled for three.
Root and Woakes' sensible stand regained control, although Woakes - who hit five fours and two sixes - was dropped on the boundary on 42 and then again on 58.
After being invited to bowl first, pace bowler Steven Finn took two wickets and became the third-fastest Englishman to reach 100 one-day international wickets.
He reached the feat in his 65th match, with only Darren Gough and Stuart Broad getting there faster (both taking 62).
Making the most of some uneven bounce, Finn surprised left-handers Evin Lewis and Kieran Powell to create easy catches.
Stokes then had Shai Hope caught behind but jarred his finger when he made a mess of a high but simple chance to dismiss Kraigg Brathwaite.
Brathwaite looked dangerous before departing for 42 after being stumped off Moeen. Mohammed, though, played fluently on the way to his second ODI half-century.
But having reached it from 71 balls by pulling Stokes high over midwicket for six, he chipped a routine catch to Adil Rashid at mid-on off Plunkett.
Plunkett did the trick again, with another variation slower delivery, when Jonathan Carter (39) skied a catch to Rashid.
Rashid held his third successive catch when he took a swirling caught-and-bowled after Jason Holder became the next to mistime an attempted big shot.
Then Carlos Brathwaite fell to an excellent catch on the long-on boundary by Billings, and Plunkett bowled Nurse as the innings ending tamely with the last three wickets falling for six runs.
Man of the match Joe Root: "It was about being patient and accepting the odd over where you might only get one or two runs.
"I thought Chris played exceptionally well. He took a lot of pressure off me at the other end. I think that's a sign of good side, where you don't just rely on one player."
West Indies captain Jason Holder: "It's a disappointing feeling, getting so close. We dropped chances, that's one area we need to improve. In batting, we need some partnerships to set us up nicely. We need to adjust and go forward from here.
"We just have to know when it is time to seize an opportunity. We had some opportunities but we turned them down, and there were some soft dismissals."
Former England batter Ebony Rainford-Brent: "England were not as clinical as they were in the first game but they put on a good fight and showed how deep they bat, with Woakes coming in and playing with freedom.
"Well done to England, this is what good teams do - even if you have that wobble, you are able to rebuild and go again."
Former West Indies pace bowler Sir Curtly Ambrose: "You have to think about batting all 50 overs. It doesn't matter if you only score 10 or 12 runs in those three overs. It is not good cricket on the part of West Indies to not bat to the end.
"There were a couple of good partnerships. Mohammed played well, but gave it away. Carter played well, but gave it away. This is international cricket and you must be able to assess situations quickly and most of the batsmen haven't done that."


A man has been convicted of using a former nuclear bunker to grow more than 800 cannabis plants - but he is not the first to grow the illegal herb in a surprising location.

Drakelow Tunnels, in Worcestershire, were originally built to house an aircraft engine factory in World War Two, but in 2013 police uncovered plants with an estimated street value of £650,000.
As the man who grew the illicit crop awaits sentence, BBC News looks at some of the other unusual places which have been converted to cannabis farms.
Acting on a tip-off, police visited a luxury nine-bedroom country mansion in January and were no doubt taken aback by what they stumbled across.
Officers discovered at least 1,000 cannabis plants, at various stages of growth, in the £1m property on Wimblington Road in March, Cambridgeshire.
Two men, a 33-year-old from Whitstable, in Kent, and a 30-year-old man from Twickenham, south-west London, were arrested on suspicion of producing cannabis and detained in custody.
Local media described the sprawling house as a once much-loved family home, with police comparing it to "something you would see in Downton Abbey or the place people take on for Grand Designs, not where you expect to see a highly professional cannabis factory".
Perhaps one of the UK's most intrepid cannabis growers was Adrian James, from Nottingham.
He set up a factory in a freight shipping container buried in his back garden in St Ann's.
The 43-year-old used a mechanical digger to bury the container and then dug a tunnel from his house to his garden, concealing the entrance with a board covered in tools.
Inside the container, he set up hydroponics equipment with timer switches and an automatic watering system.
But he was arrested in October 2011 after officers recovered cannabis worth up to £86,000 from the container.
He pleaded guilty to production of cannabis and was sentenced to three years in prison.
More than 4,000 plants were found growing in offices at a business centre, near Scunthorpe.
Such was the scale of the cannabis factory, health and safety experts were called in to assess the possible danger to the public along with Ministry of Defence police with specialised equipment to assist with the plants' disposal.
It took Humberside Police several days to clear out the £4m find on the Bellwin House Business Park.
Officers said a major drugs operation seemed to have been operating at night in two office suites next to legitimate businesses working during the day.
"This is an unusual find in that it was a first-floor office complex which was occupied and being used by members of the public and staff at the business centre," a spokesman said.
The offenders installed roller shutter doors to secure the entry and a very complex ventilation system to try to hide the smell of the plants.
"And this has all been done under the watchful eyes of the people in the business centre," PC Lee Smith, who took part in the raid, said at the time.
The two men were later charged in connection with the find.
About 250 plants were found in an underground chamber in an Essex pub.
Police discovered a metal door concealed by a bookcase in the Joker public house in Ilford, in October 2013.
A small hole enabled them to spot the plants, light and irrigation system.
A 58-year-old man was later arrested and released on police bail following the raid.
In November 2014, South Wales Police rumbled a rather cheeky choice of location for a huge cannabis factory - next to its main custody suite in Bridgend.
Detectives seized about 700 plants, which police said said was worth up to £800,000, at Queens Court, Bridgend Industrial Estate.
Dale Hart, 54, and Michael Smart, 37, both of Pencoed, and Christopher Bennett, 61, of Port Talbot, appeared at Newport Crown Court in June 2015 and pleaded guilty to the production of cannabis.
Hart was sentenced to five years in prison, Smart was sentenced to three-and-a-half-years and Bennett was given four-and-a-half years.
Car maintenance worker Hayley Pells, who worked nearby, said no-one "had a clue" about what had been happening at the unit but that "it could have been going on for a number of years".
Officers told neighbouring business units they had become suspicious, but thermal imaging cameras on board their helicopter did not pick anything up.
It is thought the plants were growing in insulated boxes, which prevented detection.
Ms Pells' father said: "It's amazing if you think about it and really brave of them to grow it next door to the police.
"Literally, you could throw a brick from the back of this unit and it would land in the police station - it's that close."
Although finding a cannabis factory in a suburban street may not be too out of the ordinary, the way police were tipped off about one in Berkshire was.
Officers were alerted to the £50,000 cannabis factory in home in Reading when a neighbour reported strong smells and noticed that her pet dog seemed to be "stoned".
Valerie Bailey said she became suspicious about a month before police raided the property in Reading when her West Highland terrier Holly started to "sleep until mid-morning".
She and her husband developed bad coughs and were forced to sleep in another room due to the smell and fumes from the plants, coming through a vent in their bedroom.
Mrs Bailey said she started to be suspicious when Holly started to need a lot of sleep.
"I had a job getting her up in the morning, it was almost as though she was drugged, probably stoned."
When police searched the home in Royal Avenue, Calcot, officers found 200 cannabis plants.
Those responsible were being traced and the drugs were destroyed, Thames Valley Police, said at the time.
The growth of cannabis farms:
The Association of Chief Police Officers (Acpo) estimated in 2012 that about 21 farms or factories were being discovered every day
Over the past few years, growers have moved away from commercial and industrial properties and use homes to cultivate the plants
In March 2013, marijuana-scented scratchcards were posted to thousands of households by police in a bid to help them detect illegal cannabis farms by alerting the uninitiated to the distinctive whiff of the plant.
Acpo believes most of the cannabis consumed in Britain is now home-grown.
Thermal imaging cameras are increasingly used on police helicopters to detect excessive heat coming from properties - a tell-tale sign of the cannabis factory.


Umpire Paul Reiffel is missing the fifth Test between India and England in Chennai after suffering concussion during the previous match.

The Australian was hit on the head by a stray Bhuvneshwar Kumar throw on day one of the fourth Test and did not take any further part in that game.
Scans gave Reiffel the all clear but he was advised to continue resting.
He is set to return to duty for the one-day series between New Zealand and Bangladesh, starting on 26 December.
Fellow Australian umpire Simon Fry, who is on the International Cricket Council's second-tier international panel, has stepped in for the fifth and final Test in the series, which India lead 3-0.
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Top international golfer, Rory McIlroy, has pulled out of the Olympics in Brazil because of concerns over a virus called Zika.

McIlroy said that although the risk was low, his health and that of his family came first.
He had been due to compete for Ireland at the Rio de Janeiro games.
Vijay Singh and Australia's Marc Leishman have already pulled out of the games because of Zika worries.
But the International Olympic Committee, following World Health Organisation advice, said it has "total confidence" the Games will be safe for athletes.
The Zika virus is a disease which is spread by a type of mosquito, called the Aedes mosquito, found in some hot countries like Brasil.
Most people who catch Zika aren't affected very badly but it is much more serious for women who are pregnant.
Scientists say they think it may affect how a baby grows before it's born.
Other people might feel unwell, as if they have flu, but it doesn't usually last more than a week.


The owner of Primark expects profits to keep rising as it continues to open more stores.

Associated British Foods said it opened 16 new outlets for the discount fashion chain in the UK, Europe and the US last year.
It predicts total sales for Primark will jump 11% in the six months to 4 March.
There were no signs UK consumers were reducing their spending, AB Foods said.
Finance director John Bason said: "The consumer in the UK has got more disposable income this year than they had a year ago - fact."
AB Foods said Primark in the UK was performing well and expected like-for-like sales to be up 2% for the six-month period, but be flat for the business as a whole.
The chain will open new stores in London, Belgium, Spain and the US over the next three months.
However, the company warned the weak pound could squeeze margins at Primark, which accounts for about half its profits.
Sterling has fallen 16% against the US dollar since the EU referendum last June and 10% against the euro, making imports to the UK more expensive.
Kate Ormrod, senior analyst at GlobalData said Primark's keen pricing gave it some protection, but added: "Ensuring product ranges remain fashionable and relevant will be imperative to retain appeal.
"This is particularly important as emerging players such as boohoo.com and Missguided continue to encroach on Primark's fast fashion USP, enabling them to steal customers and share."
AB Foods, which also owns brands including Twining tea and Kingsmill bread, said it expects "excellent progress" in group profits and its outlook for the full year was unchanged.
In November, chief executive George Weston said the pound's fall would bring "benefits and challenges" to the group.
ABF said Twinings and Ovaltine revenues were well ahead of last year, with Twinings winning market share in the US, Australia and France as well as the UK.
Ovaltine sales posted good growth in the developing markets of Vietnam and Brazil.
Higher sugar prices and increased production in Africa helped boost revenue at AB's sugar business.
Shares in AB Foods were flat at Â£26.09 in afternoon trading in London but have fallen more than a fifth over the past 12 months.


A toilet that uses human wee to generate electricity is being tested in Bristol, to see if the tech could power lights in refugee camps.

Students at UWE Bristol, working with the charity Oxfam, have built the urinal which they're testing at the university's grounds.
They hope that if the trial is successful, the technology could be used to provide light for toilets in refugee camps, where electricity is scarce.
Andy Bastable, from Oxfam, says this could be a massive step forward: "Fuel for generators is expensive. As urine is free, this an extremely low-cost and sustainable way of producing light for people at night."
A human produces 500 litres of wee every year, so there's always a lot to use and it's easy to get hold of.
The technology is called Microbial Fuel Cells (MFC).
Microbes are little cells that feed on wee; they then create electricity as a side-effect which can be used to power the lights!
The equipment that does this is placed under the toilet to collect the wee and process it.
Professor Ioannis Ieropoulos, who's leading the project, says the important thing is how cheap this is: "This experiment could cost as little as Â£600 to set up.
"This technology is in theory everlasting."
This isn't the first experiment to try and make our body waste produce useful things.
Recently the world's richest man, Microsoft founder Bill Gates, revealed a machine that takes human poo and converts it into electricity and clean water you can drink.


Housebuilder Barratt Developments has reported a 40% surge in six-month pre-tax profits, helped by selling more homes at a higher price.

It posted pre-tax profit of £295m, up from £210.2m the previous year.
Chief executive David Thomas said a 9% increase in completions had been done without compromising on quality.
He also said the housing market remained strong thanks to improved mortgage availability and government support for first time buyers.
In early morning trading on the London stock market, shares in Barratt were up by 1.16% at 569.50 pence.
The firm completed 7,626 homes in the six months to the end of December 2015, compared with 6,971 a year earlier.
They were sold at an average price of £254,000, an increase of 11% on the £229,200 average price in the first half of the previous financial year.
"In line with our strategy, we have stepped up the number of completions in the first half and we did this in a disciplined way, both financially and operationally, without compromising on the quality of the homes we're building," said Mr Thomas.
Barratt also said that sales performance across the group in the second half of the financial year to date had been strong.
The company said it was pleased to see an extension of the UK government's Help to Buy programme until 2021.
It also welcomed the introduction of the government's separate equity loan scheme for London, introduced on 1 February, which helps those buying a new build property in the capital.
"Both changes will be important for our customers, particularly in helping buyers into the market," Barratt said in a statement.
"We remain supportive of the government's Starter Homes Scheme, which is aimed at providing 200,000 homes for first time buyers by 2020."


More than 400 people in their 80s and 90s who have been the subjects of a decades-long research project are being reunited at an event in Edinburgh.

The group are part of an experiment to chart how a person's thinking power changes over their lifetime.
The reunion takes place 70 years to the day since many of the participants sat an intelligence test in the 1947 Scottish Mental Survey.
Some of the group - members of the Lothian Birth Cohort 1921 - are 96.
The other group involved in the study, from the 1936 cohort, are now aged 81.
They will meet the University of Edinburgh researchers behind the project to mark their achievements on the understanding of the ageing brain.
As well as regularly re-sitting mental tests, both groups have, in the recent decades, taken three-yearly medical examinations, including blood and ultrasound tests, brain scans and retina examinations in older age.
They have also reported on their diet, social background, activity and feelings of wellbeing.
Researchers have looked at a number of mental and physical functions of the group as they grow older including memory, speed of thinking, and many aspects of fitness and health.
During the reunion of the Lothian Birth Cohort, the researchers will reveal some of their key findings.
The University of Edinburgh's Prof Ian Deary, who originated and leads the study, said: "These anniversaries of Scotland's national intelligence testing in June 1932 and 1947 are a lovely way to bring these special individuals together to celebrate what they have contributed to ageing science.
"From the start of the Lothian studies, almost 20 years ago, I've made sure that the participants see their basic results before we report them.
"Of course, it's also a happy occasion in which to have a good blether and to swap the pleasures and pains of growing older."
The project has been funded by Age UK.


A police dog that fatally injured a Yorkshire terrier in an unprovoked attack has been suspended from duty.

Barbie was bitten on Monday night by Falco, a German shepherd, on a private lane, and was put down due to the extent of her injuries.
Falco's operational licence has been removed while the incident is investigated, Lincolnshire Police said.
The suspension was "normal practice" and was "not a pre-judgement of the circumstances", it said.
No action has been taken against Falco's handler Mick Judge, who the force said was "very upset" by the incident.
More on this and other stories from across Lincolnshire on our Live page
Barbie's owner Charles Giermak described Monday's attack, near Fishtoft, Boston, as a "horrible sight".
He said the other dog came out of the darkness and shook three-year-old Barbie "like a rag doll".
Mr Giermak, who was out walking with Barbie and her daughter Candy, said: "There was no barking, no growling - nothing - it just attacked."
He said the attack could have been prevented if the police dog had been wearing a muzzle.


Roger Federer and Novak Djokovic said Wimbledon should consider rule changes after both their first-round opponents retired with injuries.

Third seed Federer led 6-3 3-0 when Ukrainian Alexandr Dolgopolov quit with an ankle injury after 43 minutes.
Second seed Djokovic progressed after a calf injury saw Martin Klizan pull out after 40 minutes at 6-2 2-0 down.
"We had a joke in the locker room saying we should maybe play a practice set on Centre Court," said Djokovic.
Both Klizan and Dolgopolov have struggled with injuries recently and their retirements were among a total of eight - seven in the men's draw and one in the women's - over the first two days of the Championships.
The men's tour, the ATP, introduced a rule at the start of 2017 that means a player can retire before a first-round match and retain their prize money.
A lucky loser then gets the place and money earned from qualifying, plus any further prize money accrued from the second round onwards.
The rule is not in place at the four Grand Slam tournaments.
"Maybe it should be addressed," said Djokovic.
"I think the new rule that the ATP has reinforced allows players who have made it to the Grand Slam main draw to get what they deserve, but at the other hand allow someone else to play if they can.
"I support that kind of rule."
First-round losers at Wimbledon earn £35,000 this year, potentially encouraging players to take to the court when they know they are not fit enough to compete.
"The question always is, should they have started the match at all?" said Federer.
"That, only the player can answer really, in my opinion. You hope that they would give up their spot for somebody else, even though they deserve to be in there, but fitness not allowing them.
"Maybe the Grand Slams should adopt some of that [the ATP rule], then maybe we would eliminate maybe half of the players [who retire]," said Federer.
"Some of them, maybe something really did happen. Now you're thrown in the same basket, so that's rough."
Klizan suffered a recurrence of a calf injury that forced him out of tournaments in Rome and Geneva in May, and a groan went around Centre Court when, less than an hour later, Dolgopolov also failed to complete two sets.
The 15,000 spectators were at least cheered by the news that former world number one Caroline Wozniacki and Timea Babos would make a surprise appearance on Centre Court to bolster the schedule.
Three-time champion John McEnroe said on BBC Sport: "I do think when you saw Klizan, he clearly wasn't ready or able to play from the very beginning.
"They've got to figure out some kind of rule change where, I suggest, they give him half the first-round prize money and bring someone else in who is at least fit and can go out 110%.
"It's not a good look for our sport when you have to sit and watch that on Centre Court.
"For someone like Klizan, that £35,000 [first-round prize money] really matters and he's reluctant to give that up.
"That's where you need to get the powers-that-be at Wimbledon, the ATP, all the people involved in our sport, even a coach to speak to Martin and make him understand that in the best interests of the sport, and for himself - he's risking a worse injury.
"This isn't something that just cropped up, he's had issues with this for a few months, so he's got to get this sorted out."
John Isner, who won through round one on Tuesday, spent 11 hours and five minutes on court when beating Nicolas Mahut at Wimbledon in 2010.
The American could barely walk at the end of what is the longest match in history but insists only players in agony should quit at Grand Slam level.
The 32-year-old said: "I know the Wimbledon Centre Court didn't get their money's worth today. That's for sure.
"If it's just excruciating pain, OK, you can't play. If something is tweaked here or there and you feel like you can give it a decent go without hurting yourself, I think they should stay out there and I think you owe it to the fans."
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Juan Martin del Potro overcame a battling Thanasi Kokkinakis to seal a 6-3 3-6 7-6 (7-2) 6-4 victory and reach the second round.
The Argentine 29th seed won the first set before turning his ankle in the second as the 21-year-old Australian took advantage to level.
A poor tie-break from Kokkinakis handed Del Potro an otherwise even third set.
Kokkinakis then saved six match points in the final game of the fourth set but Del Potro, 28, finally came through.
The former US Open champion will face Ernests Gulbis in round two after the Latvian, ranked 589 in the world, beat the Dominican Republic's Victor Estrella Burgos 6-1 6-1 6-2.
Canadian sixth seed Milos Raonic, last year's runner-up, saw off Germany's Jan-Lennard Struff 7-5 (7-5) 6-2 7-6 (7-4) in his opening match.
Elsewhere, seeded players Dominic Thiem, Alexander Zverev and Tomas Berdych all won their respective first-round ties late on.
Queen's Club champion Feliciano Lopez became the seventh man to retire in the first round when trailing France's Adrian Mannarino 5-7 6-1 6-1 4-3.
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Labour leader Jeremy Corbyn will tell voters in north Wales they need a UK government "on their side" in his summer campaign tour of marginal seats.

He will promise investment in jobs and industry at a rally in Bangor, after meeting community groups in Llandudno.
Labour came within 92 votes of taking Arfon from Plaid Cymru and cut the Tory majority in Aberconwy to 635.
The Welsh Conservatives said his plans would lead to "bankrupt public finances".
Ahead of Saturday's visit, Mr Corbyn said the next Labour government would "transform" the economy, building on the new Development Bank of Wales.
"We will develop the jobs, skills, infrastructure and industries of the future through an investment-led approach, supported by our National Transformation Fund and a Welsh development bank, building on the Welsh Labour Government's Development Bank of Wales," Mr Corbyn said.
"People in Wales need a government in Westminster that is on their side," he added, pledging a Â£10 minimum wage, an end to the public sector pay cap, and action on energy prices and rail fares.
Labour gained three seats from the Conservatives in Wales in June's election, as Theresa May lost her majority at Westminster.
Conservative Guto Bebb and Plaid's Hywel Williams were both re-elected for Aberconwy and Arfon respectively but both saw majorities of almost 4,000 over second-place Labour drastically cut.
Targeting voters in the two seats, Mr Corbyn said: "We can win here and form the next government that will work for the many not the few."
The Welsh Conservatives said Mr Corbyn's plans would lead to "bankrupt public finances" and "broken public services".
The party's leader Andrew RT Davies said: "In Wales we've endured a Labour-led government for the past 18 years with take-home pay still the lowest in the UK and communities left behind by empty rhetoric and broken promises.
"Today, hardworking people across north Wales have the opportunity to shine a spotlight on the failures of the Labour Party over the past two decades and will rightly be excused for pressing Jeremy Corbyn on the shortcomings of his colleague Carwyn Jones in Cardiff Bay."


Syrian government forces say they have seized the last major town held by rebels in western Latakia province.

State TV said Rabia, in rebel hands for four years, was overrun by the army and "popular defence" forces.
The province is a stronghold of the Alawite community to which President Bashar al-Assad belongs.
Russian forces played a key role in the recapture of Rabia, according to the UK-based monitoring group, the Syrian Observatory for Human Rights.
The head of the Syrian Observatory, Rami Abdel Rahman, told AFP that President Assad's forces had surrounded the town from three sides in the space of 48 hours by capturing several villages.
Russian air strikes played "an essential role", he said.
The BBC's Steve Rosenberg in Syria with Russian forces
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On its website, the group, which relies on monitors to supply information from the ground, said regime forces backed by Russian officers and Hezbollah militants subsequently took control of the villages of Daroshan and al-Rawda.
The Syrian Observatory speaks of violent clashes between Syrian forces and al-Nusra Front fighters.
Rabia had been controlled by different groups including al-Nusra - an al-Qaeda affiliate.
If confirmed, the recapture of Rabia would be the latest success in the government's campaign to reassert full control of the Alawite stronghold of Latakia.
Essential to the army's progress has been the support of Russian air strikes.
The government's recent victories should limit the rebels' ability to shell the provincial capital, also called Latakia.  Last year saw a number of such shellings, which brought the war dangerously close to one of the very few cities in Syria that has been largely untouched - physically at least - by the war.
It may also give Mr Assad's forces a chance to challenge rebel control of the neighbouring province, Idlib.
This all comes as there is increasing doubt as to whether preliminary peace talks will start this week as scheduled.  One of the key sticking points remains over which rebels are invited. Syria and other parties to the conflict are under pressure to accept a wider and more representative number of groups.
According to the Syrian Observatory, the capture of Rabia poses a greater threat to rebel supply lines from the north and could see pro-government forces advance to the Turkish border.
The town's fall comes amid a concerted fightback by the Syrian military, including the recapture of the village of Salma on 12 January.


Squatters who moved into a £15m unoccupied mansion in west London saying they wanted to highlight inequality have been evicted.

Bailiffs arrived at the Eaton Square mansion, owned by Russian oligarch Andrey Goncharenko, at 08:00 GMT.
The squatters were removed in an operation which lasted 15 minutes.
The activists, from a group called the Autonomous Nation of Anarchist Libertarians, had occupied the five-storey property since 25 January.
They said they were protesting over the number of unoccupied residential properties in the capital.
The protesters inside the Grade II-listed building in London's upmarket Belgravia district - less than a mile from Buckingham Palace - told the Press Association on Tuesday they expected to be kicked out "sooner rather than later", following a court ruling to evict them.
A spokesman for the activists said they intended to move on to another property.
"As long as we can occupy somewhere - I don't know which one is going to be our next building but if we can stay close to such a politically important area like this, the spokesman, a Hungarian national who gave his name as Mordechai said.
They also claimed up to 10 homeless people had been sleeping in the mansion every night and said they had invited rough sleepers from the area around nearby Victoria station to use the mansion as a shelter.
Another of the squatters, Jessica Ellis, said she had been in the multimillion-pound property for three days.
The 23-year-old described the problem of homelessness in London as "severe".
Ms Ellis added: "I have been homeless. I know the severity of the homelessness situation.
"I think if someone like him [Andrey Goncharenko] buys a property like this and if within 12 months still hasn't lived in it or used it for anything, it should be turned into some place for the homeless."
She added she was "one of the lucky ones" as she had supported homeless accommodation to return to.


A man has died after he was hit by a car in Cookstown, County Tyrone.

It happened on the Lissan Road shortly before midnight on Monday.
Police have appealed for anyone who witnessed the incident to contact them.


Bathed in low evening light, Amoy Gardens is a hive of activity.

People duck in and out of noodle joints, fast food chains and convenience stores before heading home to the warren of apartments nestled in the estate's nineteen tower blocks.
But 10 years ago, this densely populated Hong Kong apartment complex, home to 19,000 people, was an eerie ghost town.
Two hundred residents had contracted a deadly respiratory disease, now known as Sars, within a week and no-one knew how it was spreading.
Rats and cockroaches were touted by the press as possible culprits.
"Taxi drivers refused to come here," Yip Hing Kwok, a long-time resident and now a local councillor, recalls of the deadly 2003 outbreak.
Alarm turned to panic on March 31 when residents of block E, which experienced the densest concentration of cases, woke up to find that they were unable to leave their building as police and medical staff clad in protective suits enforced an emergency quarantine order.
Police were ordered to chase down those who had already left and residents were later moved to two holiday camps.
"We tried to improve the cleaning of the estate but the number of cases kept increasing," says Mr Yip, who did not live in the blighted block. "The situation was uncontrollable."
Amoy Gardens played an unwanted starring role in the 2003 Sars epidemic that infected 8,096 worldwide, and killed 744. The disease, from the same family of viruses as the common cold, emerged in southern China at the end of 2002.
It was carried to Hong Kong by a doctor, whose one-night stay in the Metropole Hotel resulted in seven other guests being infected. These guests then jumped on planes, spreading Sars around the world.
While the disease appeared to spread fast, the number of people killed by the virus was relatively small, especially compared with the half a million people who died of influenza in the same year.
But these facts were not known until the disease had come under control in the summer. In March and early April of 2003, as the epidemic seemed to spiral out of control, Hong Kong was a city gripped by fear.
Surgical masks became hot commodities and the city's usually crowded shopping malls, restaurants and mass transport emptied. Expats fled, schools closed and those who could worked from home.
Back then, working as a reporter in the city, I recall being urged by a contact to head straight for the airport as Hong Kong was to be declared an infectious port and sealed from the outside world. A teenager was later arrested in what turned out to be an April Fool's Day stunt.
On the same day, a hugely popular singer and actor, Leslie Cheung, committed suicide by jumping from the 24th floor of the Mandarin Oriental hotel in the middle of the financial district, plunging an already anxious Hong Kong into mourning.
Sars stands for Severe Acute Respiratory Syndrome and was the name given to the respiratory disease by the WHO on March 15, 2003. Like the common cold, it belongs to the coronavirus family.
Scientists think the disease jumped from civet cats, a delicacy in southern China, to humans. It has also been linked to bats.
Of course, Hong Kong was not the only place to suffer during the epidemic.
Singapore, Taipei, Beijing and Toronto were hard hit and China's citizens were kept in the dark about the outbreak as the country's leaders initially refused to acknowledge the extent and severity of the disease.
But it is perhaps in Hong Kong, the city that suffered the greatest number of casualties, that its legacy is felt most keenly.
Hong Kong earned praise for its transparency in reporting the spread of the disease, in sharp contrast to the cover-up in China.
Like the rest of the city, I was glued to the daily 4.30pm televised press conference during the outbreak that detailed the latest death toll and new cases.
However, the government was criticised for its early handling of the outbreak, particularly at Amoy Gardens, where 42 died and 329 were infected.
Hong Kong has taken the lessons to heart, both in its approach to managing new diseases and maintaining hygiene.
Ten years after the outbreak, apartment and office blocks still boast of how many times daily they sanitise lift buttons, hand rails, door knobs and almost all public surfaces. Masks are de rigueur if you have a cold, and a sneezing or coughing fit on public transport meets with disapproving glances.
Kindergartens, like the one my daughter attends, require parents to record their child's body temperature in a special notebook each morning. If we forget, a note comes back admonishing us.
The threat of a new outbreak is taken extremely seriously and measures are taken that might seem excessive elsewhere. In 2009, the city quarantined 286 guests staying at a downtown hotel for seven days after a Mexican traveller was confirmed as contracting swine flu.
And the city is closely monitoring the emergence of a new Sars-like illness after rumours, later proved unfounded, of a case in Hong Kong in February. The disease has infected 12 and killed six people worldwide.
Amoy Gardens, like the rest of Hong Kong, has recovered from the Sars outbreak and the economic downturn it triggered with the panache typical of this fast-paced city.
The apartment complex and shopping plaza has since had a HK$60 million (5.1m; $7.7m) facelift, including changes to the drainage and sewage system that was ultimately found to have played a role in the quick spread of the disease at the estate.
Two-bedroom apartments that once struggled to find buyers in the outbreak's aftermath now fetch HK$3.9m (0.33m; $0.5m) - beneficiaries of a recent property boom.
On a tour of the infamous block E, Mr Yip proudly points out the air purifiers in the marbled lobby, where a cleaning lady stands with detergent and a grey cloth poised to wipe away any germs left by visitors.
But the memories are harder to erase.
Mr Yip said many residents, fed up with the stigma attached to their address, left after the outbreak, and those that remained have asked him to deflect the media attention the 10-year anniversary has attracted.
In the residents' committee office, Mr Yip flips through a binder of old newspaper clippings and stops on a picture of a young quarantined boy peering from a window at the armed policemen encircling the entrance to his home - a photograph he says made a particular impression on him at the time.
"l felt so helpless," he tells me. "We want to forget our unhappy image."


A new Tesco Extra superstore in Bridgwater has moved a step closer after Somerset County Council decided to sell land to the company.

The Conservative-run authority has agreed to sell its share of the Northgate site, where Sedgemoor Splash swimming pool used to be, for Â£4m.
Sedgemoor District Council agreed to sell its share of the land to the company for nearly Â£6m in January.
The supermarket giant wants to develop the entire area with offices and shops.
It will also develop nearby Brewery Fields by building a play area and water features and new footpaths and cycle paths to the town centre and docks.
The county council said selling the land would cover the cost of moving staff who currently work in offices on the Northgate site into district council offices at Kings Square.
It also said the move would save money as well as helping to improve an area of Bridgwater.
The Conservative-led district council will also receive Â£1m to make up for losing one of its car parks.
Campaign group Bridgwater Forward said the town did not need another supermarket as the site was next to a Sainsburys and an Asda, and a leisure centre should be built there to replace Sedgemoor Splash.
It is hoped a new pool will be built at Chilton Trinity school in the town.
Tesco has 12 months to apply for planning permission for the development.


Turkey's President Recep Tayyip Erdogan has called on the country's political parties to "leave egos aside" and form a government as soon as possible.

It is the first time he has spoken publicly since his ruling AK Party lost its parliamentary majority on 7 June.
Speaking in the capital Ankara, he said all sides must respect the election outcome "as the will of the people".
The AKP is now likely to try to form a coalition, but no party has indicated it is willing to join forces with it.
Breaking his silence at a graduation ceremony for international students, Mr Erdogan warned that history would judge anyone who left Turkey in political limbo.
"We cannot leave Turkey without a government, without a head," he said, adding that he hoped political parties would "prefer solution rather than crisis".
He said he would do his part in finding a solution and that nobody should doubt he will carry out his duties within the constitution.
The AKP secured 41% of the vote in Sunday's election, a sharp drop compared to the 2011 vote.
It has 45 days after the final official election results are declared to form a government - but that declaration is yet to happen.
If no coalition deal is reached, a fragile minority government and early elections loom.
Earlier, Prime Minister Ahmet Davutoglu said the AKP was open to all options but warned that history had shown coalition governments were not suitable for Turkey.
"We've used the coalition eras of the 1970s and 1990s as an example to show that coalitions are not suitable for Turkey and we still stand by that stance," Davutoglu told a meeting of AKP officials.
But he added that in the "current political picture" the AKP were "the only party that can come up with realistic solutions".
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Mr Davutoglu resigned earlier this week after the AK Party lost its parliamentary majority for the first time in 13 years, but Mr Erdogan asked him to stay on until a new government is formed.
Securing a working coalition will be tough, with opposition parties likely to demand limits on President Erdogan's role.
In the build up to the election, he had been seeking a two-thirds majority to turn Turkey into a presidential republic.
But the pro-Kurdish People's Democratic Party (HDP) upset his ambitions by crossing the 10% threshold and securing seats in parliament for the first time.
On Thursday, HDP co-leader Selahattin Demirtas said his party was open to working with other opposition parties but ruled out forming a coalition with the AKP.
"Pulling Turkey into early election debates right away will not help. We believe Turkey has to continue on its way by forming a coalition," he told reporters in Ankara.
He also said that the jailed leader of the Kurdistan Workers Party (PKK), Abdullah Ocalan, was ready to make a call for disarmament and that a peace process with the militants should soon move forward.
Mr Demirtas said the HDP, which has played a central role in peace talks, had visited Ocalan on the island prison of Imrali and would be applying to make another visit soon.
The peace process with Ocalan was launched by President Erdogan in 2012 in a bid to end a three-decade conflict that has killed more than 40,000 people.


Police believe a wanted man whose remains were found earlier this month in West Lothian was murdered soon after he was last seen in Glasgow in April.

Martin Hamilton's body was found near West Calder on 17 December. He suffered serious injuries before he died.
Police want to speak to anyone who saw the 53-year-old in Great Western Road in Glasgow on Thursday 16 April.
Officers also want to speak to anyone who saw suspicious activity near the West Calder site soon afterwards.
Hamilton's remains were discovered by a dog walker in a remote area of woodland near West Calder.
Police said that inquiries carried out so far indicated that he may have died a short time after he was last seen in Glasgow.
Det Supt Kenny Graham, who is leading the inquiry, said officers wanted to speak to "two specific sets of people".
"Firstly, we are working to establish his movements on 16th April and shortly thereafter," he said.
"He was last sighted in the west end of Glasgow, and I'm keen to hear from anyone who may have seen him or has information about where he went after this.
"The area where his remains were found are fairly remote but can be accessed from the B7015 near to the Five Sisters Business Park.
"I also want to speak to anyone who may have been in this area on, or shortly after, 16th April who may remember seeing any vehicles or persons out of the ordinary."
Det Supt Graham added: "Any information, however insignificant it may seem, may be extremely important to our investigation."
Hamilton, from Glasgow, was previously one of Scotland's most wanted men.
He was released from prison in September 2014 but was sought by police in April for breaching the terms of his licence.
At the time, police described him as "potentially dangerous".
In October, an appeal was made on the BBC's Crimewatch programme and the Crimestoppers charity also offered a reward of Â£2,000 for information leading to his arrest.
Hamilton was nicknamed the Blackhill Butcher, after the Glasgow housing estate from which he operated.
He had been on the police's most-wanted list before he was jailed in 2000 over a string of charges including drug dealing, torture, abduction and sodomy.
Hamilton was sentenced to a minimum of nine years in prison after being found guilty at the High Court in Inverness.
The case was moved 200 miles from Glasgow amid fears that witnesses could be intimidated.
Hamilton had evaded justice on 12 previous occasions when witnesses were too terrified to testify.


BBC presenters, contributors and celebrities from across the UK have been wishing BBC News School Report a very happy birthday.

18 March 2016 Last updated at 11:17 GMT
BBC Radio 5 live presenter Kaye Adams, West Bromwich Albion Head Coach Tony Pulis and actress Emilia Fox were among those sending their good wishes to coincide with the project's 10th annual News Day.


One of the alleged accomplices to the key suspect wanted over the Erawan Shrine bombing in the Thai capital Bangkok last month is Chinese, officials from both countries say.

They say that Yusufu Mieraili was born in Xinjiang, home to China's Muslim Uighur minority.
A Chinese official told the Global Times that the bombing may have been the work of separatists in Xinjiang.
No-one has laid claim to the attack, which killed 20 people.
Thai police say Mr Mieraili is part of a group responsible for the blast.
The Global Times reported a Chinese official as saying that he belonged to the East Turkestan Islamic Movement, a small Islamist separatist group said to be active in Xinjiang province in western China.
The Bangkok Post reported that he told investigators that his parents still live in the region.
The main suspect - a man wearing a yellow t-shirt who left a rucksack at the shrine moments before the 17 August blast - is still believed to be on the run.
Mr Mieraili was taken to the scene of the explosion on Wednesday morning for a crime scene re-enactment.
Wearing a bulletproof vest and with his hands bound, he was escorted by police to the elevated pedestrian skywalk above the shrine.
Mr Mieraili has confessed to handing a backpack to the suspected bomber at Bangkok's main railway station shortly before the blast, Thai police say.
China is closely watching the investigation in Bangkok, correspondents say, as speculation mounts that sympathisers of the country's Uighur community could be the chief suspects.
China has long faced criticism for the perceived harsh restrictions it places on religion and culture in Xinjiang, where the majority of Uighurs live.
Thailand recently found itself in the spotlight following its forced repatriation of more than 100 Uighurs to China.
Any confirmation that Mr Mieraili is Chinese would throw the spotlight on an ethnic conflict that China has long argued poses an international threat, the BBC's Jon Sudworth in Beijing recently reported.
Thai police arrested Mr Mieraili, 25, at the beginning of this month in Sa Kaeo province on the border with Cambodia. He was holding a Chinese passport but police warned at the time that it could be fake.
Earlier another suspect, Adem Karadag was arrested in a raid on a flat on the eastern outskirts of Bangkok.


Seven members of a drugs gang have been sentenced after a rival gang member was stabbed 18 times as he slept.

Exeter Crown Court heard Connor Cain, 19, was left for dead after the attack in the city in April 2016 but survived.
While treating his wounds in hospital, doctors found more than Â£3,000 worth of drugs concealed in his rectum.
One of the attackers boasted on Facebook afterwards, writing: "Ha, ha, ha. I stabbed the kid and the blade snapped so I could not pull it out."
The seven men, who are from Liverpool and Devon, received sentences ranging from one year in jail, suspended for two years, to 15 years' imprisonment.
Cain was jailed for three-and-a-half years last July for possession of Class A drugs with intent to supply.
The court heard he was blinded by pepper spray before being attacked by at least four men who were wearing masks or hoods.
Cain suffered severe injuries including a four-inch deep chest wound.
After the attack, Matthew Henney boasted about what he had done on Facebook by sending messages to two girls he knew in Liverpool saying: "There was only the handle left.
"He was only a little London muppet. He should not have tried to start. I warned him."
The court heard the assault was due to a rivalry between a group of drug dealers from Liverpool who had been operating around Devon and Cornwall.
Judge Mr Justice Sweeney told the offenders: "The events in the flat must have been entirely terrifying. He suffered terrible injuries which would have been fatal if he had not received immediate treatment. It was good fortune that he did not die."
"There was pre-planning and a significant degree of premeditation. You were all involved in Class A drugs gang which decided to see off opposition on what you considered to be your turf."


Sri Lanka fought back to beat India by 63 runs in the first Test in Galle - having trailed by 192 on first innings.

India had been set a victory target of 176 but fell for 112 in their second innings after lunch on the fourth day.
Sri Lanka's left-arm spinner Rangana Herath was the star, taking 7-48 as India collapsed within 50 overs.
The hosts were reduced to 95-5 in their second innings on Friday, but Dinesh Chandimal's unbeaten 162 from 169 balls to help lift the hosts to 367.
He shared valuable partnerships with Lahiru Thirimanne (44) and Jehan Mubarak (49).
The second Test, which starts in Colombo on Thursday, will be the last Test for legendary Sri Lanka batsman Kumar Sangakkara before his international retirement.


Jersey's Scott Clayton has been given a wildcard for the main draw of the men's doubles at Wimbledon 2017, alongside his British partner Jonny O'Mara.

It will be a first senior Wimbledon appearance for Clayton, 23, ranked at number 253 in the world for doubles.
Guernsey's Heather Watson - a defending Wimbledon champion in the mixed doubles - was given a wildcard to the ladies' singles main draw earlier in June.
"When I got the call I couldn't believe it," Clayton told BBC Radio Jersey.
"Yes, I believe I'm the first player from Jersey to be involved in the Championships. I played there as a junior but to be there as a pro player on the tour, it's incredible."
Yorkshire-born O'Mara, 22, who lives in Scotland, recently played with Clayton at the Aegon Open, Nottingham.
On 21 June, Britain's Marcus Willis - who qualified for the main singles draw in 2016 - was awarded a wildcard for the doubles with his partner Jay Clarke.
Since then, as well as Clayton and O'Mara, Britain's Brydan Klein and Joe Salisbury have also received doubles wildcards along with Australian pair Thanasi Kokkinakis and Jordan Thompson, plus British brothers Ken and Neal Skupski.


An all-female pop group from North Korea has ended its goodwill tour of China - before it even began.

Members of the Moranbong band unexpectedly turned up at Beijing's main airport just hours before their first concert and flew back to Pyongyang.
They were due to play three shows to help improve ties between China and North Korea.
It is not yet clear why the performances were cancelled.
Moranbong is one of North Korea's most popular bands. Its members were reportedly handpicked by the North Korean leader, Kim Jong-un, himself.
It plays a mixture of Western and traditional Korean tunes, and has been happy to perform the theme from the film Rocky alongside patriot songs praising North Korea's communist rulers.
Its members play a range of instruments, including electronic violins.
In their morally conservative homeland, the Moranbong musicians are also known for wearing revealing outfits and sporting fashionable hairstyles.
The women were waved off for their first-ever foreign tour from Pyongyang railway station on Wednesday by senior leaders.
Dressed in military uniforms, they smiled and waved to fans when they came and went from their hotel after arriving in China.
There was no hint of trouble when they practised in Beijing's National Centre for Performing Arts on Friday.
A Chinese foreign ministry spokeswoman confirmed the performances were aimed at improving ties between China and North Korea. She also joked that she did not know where to get hold of a ticket for the concerts.
But on Saturday the band unexpectedly arrived at Beijing airport and boarded a plane back home - a scheduled flight whose departure was delayed for several hours.
The band's stage set was dismantled and its concerts were cancelled. Neither China nor North Korea has given an official reason for the abrupt end of the tour.
The two countries are allies. China's Chairman Mao once said they were as close as lips and teeth.
But they have not always seen eye-to-eye over recent years. China has been particularly angry at three nuclear tests carried out by North Korea, the last in 2013.


The US Federal Reserve has raised its benchmark interest rate by 0.25% for only the third time in a decade.

The central bank voted to raise its key rate target to a range of 0.75% to 1%.
The Fed had been expected to raise rates after a robust February jobs report, solid pay gains, rising inflation and a dip in the unemployment rate to 4.7%.
Federal Reserve policymakers are expected to increase rates a total of three times this year.
The Fed aims to keep the cost of lending between banks within a specified band, which it does by buying or selling financial assets.
It is raising that band by a quarter of a percent.
Fed Chair Janet Yellen said the committee judged that a "modest increase" in the rate was appropriate "in light of the economy's solid progress."
"Even after this increase, monetary policy remains accommodative, thus supporting some further strengthening in the job market, and a sustained return to 2% inflation," she added.
The decision was approved with a 9-1 vote. Neel Kashkari, the head of the Fed's regional bank in Minneapolis, cast the dissenting vote.
This is the second time the Fed has raised rates in three months. It signalled that further hikes this year will be gradual.
The Fed's statement said its inflation target was "symmetric," indicating that after a decade of below-target inflation, it could tolerate a quicker pace of price rises.
Karishma Vaswani: Asia braces for more US rate rises
Wall Street stock indexes jumped after the announcement, with the Dow Jones Industrial Average closing up 0.5%, 109 points at 20,946.
The US dollar fell about 0.9% against the euro and more than 1% against the pound.
The central bank's outlook for the economy changed little, with officials expecting economic growth of 2.1% for both this year and 2018, before slipping to 1.9% in 2019.
Those forecasts are far below the 4% growth that President Donald Trump has said he can produce with his economic programme.
But Ms Yellen told reporters that she didn't believe it is "a point of conflict" between the Fed and the Trump administration.
"We would certainly welcome stronger economic growth in the context of price stability, and if policies were put in place to speed growth... those would be very welcome changes that we would like to see," she said.
Some economists think the next rate hike will be no earlier than June, given that the Fed probably wants time to assess the likelihood that Congress will pass Trump's ambitious program of tax cuts, deregulation and increased spending on infrastructure.
Central banks in the US and Britain both have inflation targets of 2%, while for the European Central Bank the aim is "below but close to" that level.
In all three, the headline inflation rate is there or thereabouts. And yet among these three it is only the Federal Reserve in the US that has taken the anti-inflation step of raising its interest rates from record lows.
In the UK, the Bank of England expects inflation to rise above the target due to the decline in the pound after the EU referendum. It's reluctant to raise interest rates to fully offset that because of concern about the impact on jobs and economic growth.
In the eurozone inflation is still quite subdued if you take out energy and food prices which are very volatile. So no move yet from either - and not looking very likely in the near future.
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Luke Bartholomew, an investment manager at Aberdeen Asset Management, said the Fed "faces a tricky path from here".
The US economy may turn out to be stronger than expected, leaving the Fed playing catch-up, he said.
"Meanwhile, they're facing increasingly shrill calls for their independence to be curtailed. It's hard to imagine that the rest of this hiking cycle will go off without a hitch," he added.
Kully Samra, UK managing director of Charles Schwab, said there were "a lot of unknowns" about the path of future US rate hikes.
"If White House plans for deregulation, tax cuts and more government spending are realised, then growth and inflation could be stronger than expected and lead to more hikes," he said.
"On the other hand, potential border taxes, trade tariffs and tighter monetary policy could slow growth and inflation," he added.


Liverpool striker Daniel Sturridge has returned to full training for the first time since damaging his hamstring while on England duty in August.

Brendan Rodgers's side have won only four times in 14 matches without him.
Sturridge, who scored 21 goals in 29 league games last season, was nearing a return to action last month before picking up a calf-strain.
Reds boss Rodgers expects Sturridge to be available for the next league game, away to Crystal Palace on 23 November.
Media playback is not supported on this device
Rodgers criticised England's handling of the 25-year-old after he was originally ruled out for up to three weeks.
He has played only three Premier League games this season, scoring in the 2-1 home win over Southampton on 17 August.
Liverpool are 11th in the Premier League table, 15 points behind leaders Chelsea, and without a top-flight win in their last three outings.
They are also fighting to stay in the Champions League after three straight Group B defeats.


The World Health Organization has declared its South East Asia region polio-free.

The certification is being hailed a "historic milestone" in the global fight to eradicate the deadly virus.
It comes after India officially recorded three years without a new case of polio.
The announcement means 80% of the world is now officially free of polio, although the disease is still endemic in Afghanistan, Nigeria and Pakistan.
Other countries in the WHO South East Asia region, such as Sri Lanka, Maldives and Bhutan, have been free of the virus for more than 15 years.
However, despite the "huge global significance" of the announcement, the WHO admits there are still major challenges to overcome if the world is the reach the goal of eradicating polio everywhere by 2018.
There have also been outbreaks in conflict-hit countries such as Syria, which had previously managed to stamp out the virus.
Polio mainly affects children under five years old. The virus is transmitted through contaminated food and water, and multiplies in the intestine. It can then invade the nervous system, causing paralysis in one in every 200 infections.
South East Asia is the fourth of six WHO regions to be declared polio-free after the Americas, Western Pacific and Europe regions. Eastern Mediterranean and Africa have yet to gain a similar status.
Dr Poonam Khetrapal Singh, WHO South East Asia regional director, said: "This is very significant because before this region was certified polio-free, we had half the world's population polio free.
"With the South East Asia region being added we now have 80% of the population polio free.
"This was a problem the region was struggling with for a long time, but now finally, we are polio free."
Many experts thought India would be the last country in the world to get rid of polio says Deepak Kapur, of Rotary International's India National Polio Plus Committee.
He said India faced several enormous challenges including its large population.
He said: "India has close to 170 million children under five who needed to be immunised.
"Then there's the existence of insanitary conditions which helped the polio virus to proliferate - and impure drinking water because polio is a water borne disease."
But he said the fact that India had managed it and now the whole of South East Asia could be declared polio free sent a powerful and optimistic message to the three remaining polio-endemic countries.
The world signed up to eradicating polio in 1988. The Global Polio Eradication Initiative was launched, which is a partnership between governments and organisations such as Unicef, the WHO and Rotary International. The aim was to banish polio once and for all.
In 1988 there were 350,000 recorded cases. By 2012 cases had fallen to 223. But last year there was a rise in cases to 406 new infections.
The increase is largely down to vaccination campaigns being interrupted by conflict. In October 2013, Syria reported its first case of polio since 1999. By March 2014 there were 25 cases.
An outbreak in the Horn of Africa, which started in May 2013, has seen 217 new cases in Somalia, Kenya and Ethiopia.
While Thursday's announcement clearly marked an important milestone, there was still a long way to go, said Mr Kapur.
"Every child in the world is at risk of contracting polio until such a time as the wild polio virus is completely eradicated from every part of the world," he said.
"Until then no child - be it in North America or Europe - will be free of polio potentially hunting them down all over again.
"The only way to ensure the wild polio virus no longer exists in any part of the world is to wipe it out of every community in the world.
"It is not good enough to wipe it out on one continent and not the rest of the world because today the world is just one global village.
"The only way to keep polio away is through immunisation."
He said if every child on the planet were immunised, there would be nowhere for the virus to flourish and spread.
"Today's a big occasion for the entire global polio eradication initiative because if India - which had the most difficult of situations - can do it, others around the world can do it too," Mr Kapur said.
"So Pakistan, Afghanistan and Nigeria need to replicate the example of India and go after this virus.
"Global eradication could and should be achieved in the very near future."
Crossing Continents: Syria: The Silent Enemy is broadcast on 27 March at 11:00 GMT and 31 March at 20:30 GMT on BBC Radio 4.
Assignment: Syria: The Silent Enemy is broadcast on 27 March at 08:06 GMT, 14:32 GMT, 19:06 GMT, 23:32 GMT, and 28 March at 03:32 GMT on BBC World Service.


Police have admitted having technical issues after releasing an e-fit of a burglary suspect which looks like a man wearing a lettuce.

Officers released the image after a distraction burglary in which Â£60 was stolen from an elderly woman in Stockbridge, Hampshire.
But the picture appeared to show the man with a lettuce on his head.
Police said they were waiting for a software upgrade to improve the quality of hair in future e-fits.
A spokesperson said that "while the hair on this image may not be of the best quality, it takes nothing from the overall clarity of the facial features".
He added: "It would therefore be wrong to withhold the release of the e-fit just based on this technical issue.
"We would never release an e-fit a victim disagreed or was unhappy with and in this instance the victim fully supported the publication of this image."
The suspect had asked the woman for money for gardening work but stole Â£60 from her handbag
He is described as white, between 40 and 45, about 5ft 8ins, with a round clean shaven face, large round eyes and with wavy blonde or greying hair.
A Victim Support spokesperson said: "Victims or witnesses to a crime quite rightly want and expect the criminal justice system to try and bring someone to justice.
"People put their trust in the system and the software and expect results, which would explain why people might be baffled by the picture.
"But it wouldn't be fair to criticise the force if what they have done is produced the best possible image from the facilities and description available to them."


Markets have reacted positively to the news that the UK will not be split after the Scottish referendum results.

In early trading in Asia, the pound rose against all 16 major currencies, including recording its biggest two-day rise in a year against the dollar, up 1.4% to around $1.65.
Recall at the end of August before the uncertainty over the referendum started to spread, sterling was at just under $1.66. In addition, the pound rose to a notable two-year high against the euro.
Stock markets are also up in Asia, with Japan's Nikkei index rising by nearly 2% at one point and the Hong Kong and Indian markets also posting gains.
In terms of futures, the FTSE 100 could open about 0.7% higher, while US stocks could also see a higher open despite new records set by the S&P 500 and the Dow Jones at the close yesterday.
There are of course other factors moving markets, especially stocks, including the Federal Reserve's stance on interest rates and Alibaba's record US IPO.
But removing a major source of uncertainty in the UK plays a role as well, and is most noticeable in currency markets.
At one point, the volatility of trading the pound was as high as it had been during the 2008 global financial crisis. But, as the referendum result became clear, the value of sterling rose.
In some respects, the future of the pound was one of the main sources of uncertainty.
After all, the debate over whether Scotland would use the pound unofficially or introduce its own currency should it become independent was one of the unknowns to be worked out in the next 18 months, among other hotly debated options such as a currency union.
From the experience of Latin American countries with 'dollarisation,' there are downsides to not having one's own currency. This includes the inability to generate domestic savings in the country's currencies which can negatively impact much-needed investment.
Of course, issuing one's own currency as a small nation raises its own issues, not least in terms of joining the EU when the noises from Brussels suggested that it would involve adopting the euro eventually.
There are other uncertainties now for Scotland after this vote.
But, for markets at least, the big uncertainty that could have lingered for a year and half over the currency and the economy is lessened and sentiment is positive as a result.
For more on business and economics, watch Talking Business with Linda Yueh. Broadcast times are found at: Talking Business with Linda Yueh.


A victim of the Alton Towers Smiler crash described the aftermath as being like "a horror movie" as the theme park admitted health and safety breaches.

Chanda Chauhan and her daughter Vanisha Singh spoke out for the first time about their ordeal riding in the second row of the carriage.
Merlin Attractions, which owns the Staffordshire site, admitted one charge.
"I'd like to see justice to stop this ever happening again," said Ms Singh.
Ms Chauhan, 50, one of five people seriously injured, was rescued in a painstaking operation from trapped seats.
She had surgery to her stomach and, following the crash, has received further treatment for a damaged liver and blood clots.
"We were in a horror movie with flesh, blood, everything and we had to endure that for four or five hours," she said.
"Although we weren't cut, and our scars were invisible, that stayed with us."
Alton Towers admits Smiler safety breaches
Ms Chauhan added: "There were moans, crying, screaming; then suddenly there was an eerie silence and that was so haunting.
"I could see what looked like red paint and I thought 'oh my god that is actually blood'.
"The adrenalin that I had before going on the ride turned into adrenalin of fear."
Ms Singh, 30, from Walsall, suffered broken ribs and a swollen lung.
She said the crash affected her young children, aged one and two.
"They've got separation anxiety," she said.
"If I leave or go anywhere they start to panic because they remember me going into hospital. Every time I leave they still think we don't know when mummy's coming back."
The Health and Safety Executive's prosecution alleged that Merlin failed to protect those injured from the risks of the Smiler ride.
It relates to Leah Washington, from South Yorkshire, and Vicky Balch, from Lancashire, who both lost a leg in the crash.
The charge also names Miss Washington's boyfriend, Jo Pugh, Daniel Thorpe from Manchester and Ms Chauhan, from Wednesbury - all seriously injured on 2 June 2015.


A Vietnamese father and his son who fled to the jungle during the war four decades ago have been persuaded to leave, officials say.

Ho Van Lang and his 82-year-old father reportedly shunned contact with the outside world after three family members were killed by a landmine.
For most of their time in the jungle their whereabouts was unknown.
They were discovered living in dense foliage in central Quang Ngai province and were barely able to communicate.
Mr Ho was said by officials to only know a few words of the local Cor dialect.
Vietnamese media reported that Mr Ho's brother succeeded in tracking the pair down 20 years ago, but had not been able to persuade them to return to modern society.
Local media initially reported that the 82-year-old's wife had been killed by the mine, but it subsequently emerged that it was in fact his mother and her two grandchildren.
While in the jungle, the pair wore only loincloths and used a homemade axe to chop down trees. They survived on corn, fruits and cassava roots from the jungle.
They lived in a tree house, five metres above ground, where they kept arrows for hunting and knives for killing animals.
The older man kept his military trousers neatly folded in a corner as well as the little red coat his son was thought to have been wearing when they fled.
A party of local people who discovered them were reported to be startled by their wild appearance and outlandish gestures.
They reported their find to the leaders of a local commune, who deployed a team to track them down.
After a five-hour search on Thursday the team located the father and son in their tree house.
Officials say that Mr Ho fled to the jungle after being traumatised by the mine explosion.
The pair are now being given medical checks as the first step in the process of reintegrating them into society.


A new war memorial will have no names inscribed on it in case errors are included.

The new installation will commemorate 40 soldiers from Tidworth, Wiltshire, who have died in battle since 1914.
Chris Franklin, town mayor, said the memorial committee's decision to "omit the names" seemed to be "purely based on it being too much of a risk".
But committee member Daz Stephenson said it wants the town council to complete the research on the soldiers.
Despite being a garrison town, Tidworth has never had an official war memorial to commemorate those who lost their lives since World War One.
"We've done an awful lot of work looking into the names but there's a lot of obscurity and we don't want to get it wrong," said Mr Stephenson.
"We would prefer to hand over the memorial next year and leave it up to the town council to do that research and make the decision to put the names on or not."
But Mr Franklin said "quite a bit of research" had already been done and adding the names later would be a "bit of a damp squib".
"We're coming up to Remembrance and the normal saying is - When you go home tell them of us and say: for your tomorrow we gave our today," he said.
"The clue there is 'tell them of us' - if there's no names they can't tell us."
The Â£130,000 granite memorial is due to be in place next year.


Former champion Maria Sharapova battled to a straight-set win over Swiss Belinda Bencic to progress to the quarter-finals of the Australian Open.

Sharapova, seeded fifth, was erratic but served 21 aces to seal a 7-5 7-5 win after two hours and six minutes.
The Russian will next play either top seed Serena Williams or compatriot Margarita Gasparyan in the last eight.
Sharapova, who made seven double faults and 46 unforced errors, said she expected to next play Williams.
The 28-year-old, who was beaten by world number one Williams in last year's final, said: "It was a great final last year, I came close in the second set but not close enough. I'll look forward to playing the best in the world and it'll be a great match."
Elsewhere, Japan's seventh seed Kei Nishikori saw off Jo-Wilfried Tsonga with ease, beating the ninth seed 6-4 6-2 6-4.
The 2014 US Open finalist will face Novak Djokovic or Gilles Simon in the last eight.


Chris O'Hare won the men's 1500m at the Anniversary Games in London on Sunday, adding to his victory at last weekend's British Championships.

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The US-based athlete from West Linton managed to overtake Kenya's Vincent Kibet coming down the home straight to finish in three minutes 34.75 seconds.
Laura Muir was second in the women's mile, her time of 4:18.03 half a second outside Zola Budd's British record.
Dunblane's Andrew Butchart set a new Scottish 3,000m record of 7.37.56.
He finished third behind four-time Olympic champion Mo Farah and Spain's European indoor champion Adel Mechaal.
"I'm over the moon with that performance," said Butchart.
"Mo was coaching me mid-race and giving me advice on what to do, and I felt really good. I had so much fun out there. It was a good rehearsal for the World Championships."
O'Hare said he knew that with 200m to go of his 1500m race he had "a lot to do".
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"I was mad at myself so I thought I had better go and hope there was enough track left and there was by half a metre," he said.
"I feel so much stronger than I have ever been. I have put in a lot of work. I didn't use any of my finishing speed until the last 150m.
"It is huge just knowing even in a 3:34 race that I've got the finish and could close down on the big guys so it is a huge confidence builder."
While Muir fell short of adding to the five British records she has set in the past year, despite finishing behind Hellen Obiri she did manage a personal best and set a new Scottish record of 4:18.03.
She may yet run in both the 1500m and 5,000m at next month's World Championships.
Steph Twell also ran a personal best in the same race. Her time of 4:25.39 lifts her to third fastest Scot ever.
Guy Learmonth, who won silver at the British Championships, will return to the stadium for the World Championships. He ran a personal best in the 800m of 1:45.77 to fall inside the British Athletics qualifying time of 1:45.90.
And he could yet be followed into the Great Britain and Northern Ireland team by fellow Scottish 800m runner Jake Wightman, who finished ahead of him in seventh place, clocking a time of 1:45.42.
Wightman is now only behind Tom McKean on the all-time Scottish records.
Meanwhile, in her fourth race in nine days Eilidh Doyle was fourth in the women's 400m hurdles.
"I felt pretty good but I was just dying over the last 50m," she said.
"I've raced quite a lot recently. I'm happy to have been competitive and take a couple of scalps and I feel it's coming together nicely now."


Home Secretary Amber Rudd has signed an order for the extradition of a man with autism to the US, where he is accused of computer hacking offences.

Lauri Love, of Stradishall, Suffolk, is accused of hacking into the FBI, the US central bank and Nasa.
The family of the 31-year-old, who has Asperger's syndrome, said they would appeal against the decision.
Mr Love has previously said he feared he would die in a US prison if extradited.
Last month, a judge at Westminster Magistrates' Court ruled he could be sent to the US to face trial.
His lawyers said he could be sentenced to up to 99 years in prison if convicted.
Analysis by Danny Shaw, BBC Home Affairs Correspondent
Two months ago, a court ruled that Lauri Love should face trial in the United States.
He's accused of hacking into the FBI, the US central bank and the country's missile defence agency.
Lawyers for Mr Love said his mental health problems meant he should not be sent abroad, but US prosecutors said that was an excuse to escape justice.
Amber Rudd, the Home Secretary, has now signed an order for the extradition to proceed.  The Home Office said Ms Rudd made the decision after "carefully" considering all relevant matters.  Mr Love is expected to appeal.
His father, the Reverend Alexander Love, said the Home Secretary had written to his son.
He added: "My sense is they are saying it is not their fault. They have created procedure [for extradition] that they can't control.
"We will be appealing. We are talking to our lawyers. It was going to happen - it was inevitable - but it's still painful. I cannot begin to express how much sorrow it causes me.
"All we are asking for is British justice for a British citizen."
Tor Ekeland, Mr Love's US lawyer and an expert in hacking cases, said Mrs Rudd was "boxed in" by UK legislation and would have found it "very hard" to justify blocking the extradition.
He told Iain Dale on LBC: "He does have an appeal to the High Courts. We have one more shot at it in the UK."
Mr Ekeland added that he feared that Mr Love would face a "way harsher environment" in the US following Donald Trump's election.
Barry Sheerman, one of the more than 100 MPs who have signed a letter calling on US President Barack Obama to block Mr Love's extradition, said he was "deeply disappointed" at the decision.
Mr Love was first arrested at his Suffolk home in 2013.
He had computer equipment seized by British police, but the UK investigation into him was dropped.


Tottenham's England international midfielder Dele Alli has signed a new deal to remain at the club until 2022.

Alli, 20, signed a five-and-a-half-year contract when he joined from MK Dons for an initial £5m in February 2015.
He made his first appearance for Spurs on the opening day of last season, scored 10 goals in 46 matches and signed an improved contract in January.
Alli made his England debut in October 2015, and scored on his full debut against France the following month.
"I can't think of anywhere better with the fans, the manager and the young team we've got here - it's a great place to be," he said.
Eric Dier, a team-mate for club and country, signed a new five-year deal last week.
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Three hundred London bus conductors are to lose their jobs to make savings of £10m a year, Transport for London (TfL) has announced.

The conductors work on New Routemaster buses, introduced in a blaze of publicity by ex-mayor Boris Johnson.
The changes mean passengers will no longer be able to board the buses by hopping on/ hopping off.
TfL claimed having conductors on board made only a "modest difference" to customer satisfaction.
The conductors will disappear from six bus routes; numbers 9, 10, 11, 24, 38 and 390.
They are employed by operators Arriva, Go-Ahead, Metroline and RATP. TfL pledged to work with those companies to provide support and information on job opportunities for sacked conductors elsewhere.
The New Routemaster buses were a flagship transport policy of former London mayor Boris Johnson and were used as a political tool during his 2008 election campaign.
Criticisms were made over the cost of the new buses and there were problems with their hybrid engines and non-opening windows.
However, BBC Transport correspondent Tom Edwards said Londoners had a "begrudging affection" for them.
A small number of Heritage Routemaster buses on route 15 will continue to operate with conductors.
The role of conductor on the new buses was more for safety as they didn't sell tickets. They made sure passengers didn't hurt themselves jumping on and off the rear platform.
Now 300 of them will lose their jobs.
They were introduced by the mayor Boris Johnson, but now he's gone the flagship projects of the former mayor do not have as much political protection.
We are also seeing the start of big cuts at TfL, with its operational grant from the government cut by £591m in 2018.
Meanwhile the new mayor's TfL fares freeze will cost £600m, and on Friday there was a redundancy trawl for senior managers.
So this won't be the last cuts we see. What is a big surprise though is that front-line staff are seeing the cuts so soon. That will inevitably lead to political fall-out.


Rangers winger Michael O'Halloran has joined former club St Johnstone on loan until January.

O'Halloran, 26, moved to Ibrox from Saints in February 2016 while Rangers were in the Scottish Championship.
He helped them win promotion but featured mainly as a substitute in the Premiership last season.
And St Johnstone say the former Scotland Under-21 player could be involved in Saturday's friendly away to East Fife.
In his first spell at McDiarmid Park, O'Halloran netted 16 times in 90 appearances after starting his career at Bolton Wanderers and having loan spells at Sheffield United, Carlisle United and Tranmere Rovers.
All three of his goals for Rangers came in the Championship.
In April, O'Halloran was left out of the Ibrox first-team squad after manager Pedro Caixinha said an "internal affair" had been "solved".
Midfielders Stefan Scougall and Kyle McClean and defender Scott Tanser are Saints' other summer signings so far.
Find all the latest football transfers on our dedicated page.


Police in Australia say they have foiled an Islamic State-inspired plot to carry out an attack at a World War One centenary event.

Police arrested five teenage suspects, charging one 18-year-old with conspiring to commit a terrorist act.
The men were planning to target police at an Anzac memorial event in Melbourne next week, police said.
About 200 police officers took part in the counter-terrorism operation in the city early on Saturday.
Acting Deputy Police Commissioner Neil Gaughan told reporters that evidence suggested the suspects had been influenced by Islamic State.
One of the men, Sevdet Besim, appeared briefly in Melbourne Magistrates Court on Saturday.
Police say a second man held on terrorism-related offences is also likely to be charged.
A third man, also 18, was arrested on weapons charges and two other teenagers, aged 18 and 19, were in custody and assisting with inquiries.
Officials referred to possible attacks using "edged weapons", but Mr Gaughan said there was no evidence to suggest there was "a planned beheading".
The men were "associates" of Abdul Numan Haider, a teenager shot dead in September after he stabbed two officers, police said.
Anzac Day is an annual day of remembrance for servicemen and women from Australia and New Zealand. A series of events are planned for next week to coincide with the 100th anniversary of the landings at Gallipoli, Turkey.
Australian Prime Minister Tony Abbott urged people to turn up to memorial events as planned.
"The best thing we can do to counter terrorism... as individuals is to lead normal lives," he said, adding that the authorities were doing everything possible to keep people safe.
Police said that although officers were the primary target of the alleged plot there was also a threat to the public.
Search operations were continuing at several addresses in the south-east of the city on Saturday.
The premier of Victoria, Daniel Andrews, said the police presence at Anzac Day events would be "significantly increased".
"These individuals arrested today are not people of faith, they don't represent any culture," he added.
"This is not an issue of how you pray or where you were born... this is simply evil, plain and simple."
Australia raised its threat level to high last September and has since carried out a series of counter-terrorism raids.


An Irish TD (member of parliament) has apologised for his "disrespectful and inappropriate" behaviour after he grabbed a female colleague in the Irish parliament and put her on his lap.

It happened at around 03:00 BST on Thursday during a break in a debate on changes to Ireland's abortion laws.
It was captured on the Dáil's camera.
The footage shows Tom Barry pulling Aine Collins on to his lap and Ms Collins getting up and walking away after a few seconds.
Mr Barry said: "What I did last night was disrespectful and inappropriate.
"I have apologised to Áine Collins and she graciously and immediately accepted my apology. No excuses, I just shouldn't have done it."
The incident happened as TDs gathered in the chamber before a vote was due to take place.
Ms Collins, the TD for Cork North West, was seen talking to Mr Barry, the representative for Cork East. They were both elected to the Dáil for the first time in 2011.
Mr Barry then grabbed Ms Collins and put her on his lap, while appearing to talk to her. After a few seconds she got up and walked away up some stairs in the chamber.
A spokeswoman for Fine Gael said: "The incident was inappropriate and shouldn't have happened."
The incident happened as the abortion debate extended into the early hours of Thursday. The session was finally adjourned at 04:57 BST and is due to resume later on Thursday.


A husband who hit his wife over the head before dousing her body in white spirit and turning on a gas hob has been jailed for life for murder.

Maria Byrne, 35, died at the couple's home in Morgan Crescent, Theydon Bois, Essex, on 13 February.
Former stockbroker Darren Byrne, 40, killed her after she discovered he had been having an affair, Chelmsford Crown Court heard.
Byrne was found guilty of murder and arson and must serve at least 24 years.
Read more on this story and other Essex news
The court heard Byrne hoped his wife's body would catch on fire while he went for an hour-long dog walk.
Returning to find his plan had not worked, he called the emergency services to say his wife was "burned".
In sentencing, Judge Charles Gratwicke told Bryne: "The effect of your savagery will live with [Mrs Byrne's family] for the rest of their lives."
He said Maria Byrne "remained living for 30 minutes" after he attacked her.
He described Byrne as "wicked" and added: "Nobody sitting in this courtroom listening to the evidence would have felt anything other than sickness and revulsion as to what you did.
"Not only did you extinguish Maria Byrne's life but you left her two boys motherless and her family devastated."
Mrs Byrne's mother Linda Biggs told the court in a victim statement: "Maria was an only child and we trusted her with Byrne, a man the family treated like a son.
"She was beautiful, loving, loyal, kind, gentle and funny. She was everything to us, our whole world. She was brought up surrounded by love and she was simply our darling girl."
The court heard that when Byrne called 999 he told the operator: "The stove was on and the frying pan's on the other side of the room. She's not breathing."
Byrne had told paramedics his wife had been making him a bacon sandwich and when he returned home she was dead.
Mrs Byrne's death was initially treated as unexplained but a murder inquiry started following a post-mortem examination which identified white spirit on her clothing.
A half-empty bottle of white spirit was also found in the garage, the jury heard.