Scientists say they have found the first evidence that giant sea reptiles - which lived at the same time as dinosaurs - gave birth to live young rather than laying eggs.

They say a 78 million-year-old fossil of a pregnant plesiosaur suggests they gave birth to single, large young.
Writing in Science, they say this also suggests a degree of parental care.
The fossil, the first of a pregnant plesiosaur found, is at the US Natural History Museum of Los Angeles County.
After being excavated from a ranch in Kansas, US, the 5m-long fossil skeleton Polycotylus latippinus  lay for two decades in the basement of the Los Angeles museum waiting to be chiselled from its rocky casing.
Two years ago when researchers began to piece the bones together they quickly realised that they were in fact dealing with two separate animals; an adult plesiosaur and a smaller juvenile.
The study's authors report that the juvenile was unlikely to have been eaten by the larger reptile because its tiny bones showed no evidence of bite marks, and its soft, immature skeleton suggested an animal only two-thirds of the way through its development.
For more than 200 years palaeontologists have speculated about how these colossal Cretaceous animals reproduced.
Many believed the plesiosaur was too cumbersome to drag itself up the beach to lay eggs, and so must have given birth to live young.
"[The find] provides the first direct evidence for live birth in plesiosaur," said palaeontologist Adam Smith from the Thinktank Centre, Birmingham Science Museum, UK.
"It's a very interesting find...[and] has been a long time coming."
"The lack of fossil evidence of a pregnant plesiosaur was frustrating," explained the study's lead author Frank O'Keefe, from Marshall University in Huntington, US.
But he added: "What is really surprising about this fossil [is] that plesiosaurs [reproduce] differently to other marine reptiles... they give birth to one big baby instead of a lot of little babies."
By making comparisons with modern animals, such as whales, which give birth to larger, single young and then go on to care for them, Dr O'Keefe and his colleague, Luis Chiappe from the museum, attempt to infer something about plesiosaur behaviour.
In a similar way to land-dwelling dinosaurs, which are thought to have provided food for their nest-bound young, plesiosaurs, the authors suggest, might have been doting parents.
But Dr Smith was less convinced. He said that it was "certainly quite possible... but is very speculative".
P. latippinus's close relatives had three young at one time.  It is possible the P. latippinus evolved to have only one, and care for it, he told BBC News, but more pregnant specimens are needed to be more certain of this.
Dr O'Keefe agreed, explaining that unlike on land where nests are preserved, studying the behaviour of ancient marine creatures is very difficult.
"When you get right down to it, behaviour doesn't fossilise, so we are stuck trying to make these inferences using modern animals where we can observe their behaviour," he explained.


Maria Sharapova's agent has accused "journeyman" rivals of trying to prevent the Russian playing at next month's French Open because it is their "last chance to win a Slam".

Sharapova, 30, is set to return from a 15-month doping ban at the Porsche Grand Prix in Stuttgart on Wednesday.
Her wildcard entry was called "disrespectful" to other players by ex-world number one Caroline Wozniacki.
Agnieszka Radwanska said Sharapova should not be invited to Grand Slams.
Sharapova plays Roberta Vinci of Italy in the first round in Stuttgart, and victory over the world number 35 could set up a second-round tie with Radwanska, who faces Ekaterina Makarova.
Britain's Johanna Konta is in the other half of the draw and will start against a qualifier.
Sharapova, twice a winner at the French Open and a former world number one, is currently unranked and will require a wildcard to compete at Roland Garros, with the France's tennis federation yet to announce its decision.
Referring to Radwanska and Wozniacki, Sharapova's agent Max Eisenbud said the "next generation [is] passing them" and that they are "smart to keep Maria out of Paris" in a statement released to tennis journalist Ben Rothenberg.
Neither Polish world number eight Radwanska, 28, nor 26-year-old Dane Wozniacki have won a Grand Slam title, but both have competed in Grand Slam finals.
Eisenbud added that if there was "no Serena [Williams], no Maria [Sharapova], no Victoria [Azarenka], no Petra [Kvitova]" at the French Open, it would be the "last chance" for "journeyman" players like Radwanska and Wozniacki to claim a Grand Slam.
World number two and 23-time Grand Slam winner Williams will miss the tournament after announcing her pregnancy, while former world number one Azarenka gave birth to her first child in December and is expected to return to competition at the end of July.
Two-time Wimbledon champion Kvitova has said she has a "chance" of making a shock return at the French Open next month as she recovers from a career-threatening hand injury sustained when she was stabbed by an intruder in December.
Sharapova was given a two-year ban last year, backdated to 26 January 2016, after testing positive for heart disease drug meldonium at the Australian Open.
Her suspension was reduced to 15 months in October, following her appeal to the Court of Arbitration for Sport (Cas).
Eisenbud also said other players "have no clue" about Sharapova's case because they have not read paragraphs 100 and 101 of the Cas ruling.
Paragraph 100 states the panel accepts Sharapova "did not endeavour to mask or hide her use of mildronate [meldonium]", while paragraph 101 adds that "under no circumstances, therefore, can [Sharapova] be considered to be an 'intentional doper'".


An 18-year-old man has appeared in court charged with the kidnap and rape of a 62-year-old woman after an alleged attack at a beach in north Wales.

Jack Karl Thomas Williams, of Rhyl, is also charged with causing the woman grievous bodily harm with intent.
The incident is alleged to have happened at Pensarn beach, Abergele, in the early hours of Saturday.
Williams appeared before Llandudno magistrates and was remanded in custody.
His next appearance will be before Caernarfon Crown Court next month.


Northern Ireland's first dedicated Ulster Scots radio station is set to go on air after getting approval from the communications regulator.

Ballymoney-based fUSe FM has secured one of five new community radio licences that were awarded by Ofcom.
The regulator has also granted a radio licence to Maghera-based Raidió G, the first Irish language station to be run from outside Belfast.
The three other licences were given to Portadown, Larne and Belfast stations.
The three community stations are Bridge FM in Portadown, Chaine FM in Larne and Belfast FM, which is aimed at Belfast citizens aged 55 and over.
In its application for a licence, fUSe FM said it would "reflect the traditions, language and culture of Ulster Scots in Ballymoney and surrounding areas".
Raidió told Ofcom it would "serve the Irish language community, and those with an interest in Irish language and culture within the broader English-speaking community, in the greater Maghera area in south County Derry".
Community radio stations usually cover a small geographical area and are run on a not-for-profit basis.
There are more than 200 operating across the UK.
Ofcom said that as well as providing "unique content", the stations bring wider benefits to their local communities.
"These include offering training and work experience opportunities and providing a voice to those, such as older people or speakers of minority languages, who may find it harder to access the media," the regulator added.
The five new licences will bring the number of community radio stations in Northern Ireland to 17.


The family of a soldier who died at Deepcut Barracks 16 years ago have been told they can apply for a new inquest.

Pte Geoff Gray, 17, from Seaham, County Durham, was found with two gunshot wounds to his head while on guard duty on 17 September 2001.
The Army said he killed himself but an inquest returned an open verdict.
His family won the right to apply to the High Court for a fresh inquest after Attorney General Jeremy Wright QC agreed new evidence had come to light.
He said: "Having considered the application, I have given consent to the family of Pte Geoff Gray to apply to the High Court for a new inquest into his death.
"I am satisfied that there is new material evidence available that was not put before the inquest in 2001 and I believe that it is in the interests of justice for the application for a new inquest to be heard by the High Court."
Pte Gray was one of four young soldiers to die at the barracks in Surrey between 1995 and 2002.
Last year a High Court judge gave the go-ahead for a fresh inquest into the death of Pte Sean Benton, from Hastings, East Sussex.
It is expected to take place at Surrey Coroner's Court in Woking from 24 January next year.
The 20-year-old was found with five bullet wounds to his chest in June 1995 while undergoing training at Deepcut.
Pte Cheryl James, 18, from Llangollen, North Wales, shot herself in November 1995, according to a second inquest into her death which concluded in June last year.
Following Pte Gray's death in 2001, Pte James Collinson, 17, from Perth, was found dead with a single gunshot wound to the head on 23 March 2002.
20-year-old Pte Sean Benton, from Hastings, was the first to be found dead in June 1995
18-year-old Pte Cheryl James, from  Llangollen was found with a bullet wound to her forehead in November 1995
17-year-old Pte Geoff Gray, from Seaham, was found with two gunshot wounds to his head in 2001
17-year-old Pte James Collinson, from Perth, was found with a single gunshot wound through his chin while on guard duty in 2002
Who were the Deepcut four? Background to the deaths and timeline of events


Jeremy Corbyn, the new leader of the opposition, has been Islington North MP for 32 years.

A look through the early press archives shows that his most predictable trait as MP of the north London constituency was to do the unpredictable.
Opinions on his style of dress have never been far away, either.
The first half of his tenure tells of a man sympathetic to controversial causes; of rebellion; and even of the gift of an organic marrow.
1983
- Mr Corbyn ignores convention for his maiden speech by making controversial statements. He attacks the Conservative government, newspapers and critics of Islington Council and accuses the government of "robbing Islington of £23m in rate support grant [the central government grant given to local authorities which can be used to finance revenue expenditure]".
He says he will speak up continuously for a borough "maligned by the government and the press mercilessly".
- He campaigns for a lorry ban in Islington following an accident in St Paul's Road in which two people were killed and a house seriously damaged.
He tells the Islington Gazette that "there never was a justification for allowing the size and weight of lorries that exist on our roads and there is even less justification with the completion of the M25 for any opposition to a heavy goods vehicle ban throughout London".
1984
- Mr Corbyn is arrested with 100 other anti-apartheid demonstrators outside the South African embassy.
- He is given his first dressing down for scruffy dress in the Commons with Conservative MP Terry Dicks calling for sanctions against those who do not conform to dress standards. Archway residents tell the Islington Gazette they do not mind that he wears an old polo-necked sweater knitted by his mother.
- His surgeries attract the Islington Gazette's attention because he provides tea, TV and toys and sessions for Turkish people with interpreters.
1986
- Asian Times reports he opposes plans to introduce one-person operation on the 43, 149 and 279 bus routes. He says: "One-person operation is mad. It will make it very difficult for frail and elderly people to get on the bus."
1987
- He receives £250 for wrongfully being arrested outside the South African embassy.
- The hiring of Ronan Bennett - convicted in 1975 for the murder of an Ulster police inspector - as Mr Corbyn's Commons researcher attracts condemnation and raises the issue of security clearance for Commons staff. Mr Bennett's sentence had been quashed on appeal after he served 13 months in prison. [He is now a high profile author and screenwriter, and a murder inquiry was reopened in 2011.]
1988
- More complaints about Mr Corbyn's dress. Conservative MP Richard Holt complains to the Speaker that he is allowed to debate despite not being "properly attired" in a collar and tie. Mr Corbyn tells the Islington Gazette: "Frankly I am not interested in what Tory MPs think of what I wear."
1990
- A letter to the Islington Gazette criticises the time Mr Corbyn spends on international cases. A resident says he is more interested in Central America and Chile than the closure of Twelve Trees residential home.
- He is presented with an organically-grown marrow at Gillespie Park summer fair. Ninka Shepherd who grew it remarks that "he always answers all his letters and [is] one of the most hard-working MPs in Parliament".
- Sending his son Ben to a private Montessori nursery courts criticism. He tells the Chronicle he has no choice because only children with poor parents get a place in a council-run nursery and with his MP salary it rules him out.
1991
- He appears at Highbury Magistrates' Court for not paying his poll tax bill of £481. Sixteen other residents join him, all opposing the levy on grounds other than inability to pay.
He tells the Times: "I am here today because thousands of people who elected me just cannot afford to pay."
1993
- On BBC Radio 4's PM programme he criticises Labour leader John Smith for "failing to articulate the views of the mass of the people".
Islington Labour councillor Greg Hayman tells the Islington Gazette: "It is typical of Jeremy to put the boot into the leadership when John Smith is 20 points ahead in the opinion polls."
1996
- He campaigns for a third inquest to be held into the death of Leon Patterson from Islington, found dead in a police cell in Greater Manchester in 1992.
1999
- The decision over where Mr Corbyn and Claudia Bracchitta's son Ben is to be schooled prompts accusations of hypocrisy.
Ms Bracchitta tells the Observer: "I couldn't send Ben to a school where I knew he wouldn't be happy. Whereas Jeremy was able to make one sort of decision, I wasn't."
The Observer reports that by its GCSE results, Islington is the third worst education authority in the country; while Holloway, where Ben was offered a place, is on the list of failing schools.
2000
- Seventeen years into his job he warns that Labour lost the local council election because "there was a perception they were not delivering quality of service".
- He tells the Highbury and Islington Express: "I remember when Arsenal won the cup at Wembley in 1998 and I missed a goal. I asked the man next to me who scored and he said, 'Marc Overmars. Now, Mr Corbyn, what is happening with my plumbing?'"
Thanks to Islington Heritage Centre.


Heavy rain is due to return on Sunday after a month's worth of rain fell in a single day on Friday, forecasters say.

Saturday will see a brief return to sunnier conditions, before thundery showers set in, the Met Office said.
Travellers and holidaymakers faced delays on wet roads in areas on Friday, and downpours brought services at several London Tube stations to a halt.
A Met Office warning for wind and rain remains in place for south-east England until late morning.
Cloud is then expected to break providing drier, brighter conditions.
Temperatures could reach 21C (70F) in London, the high teens in the Midlands, and around 15C (59F) in Scotland and Northern Ireland.
Forecaster Alex Burkill said: "Most places should be dry by lunchtime today.
"It should be a much drier, brighter and much more pleasant day."
Sunday will see conditions take a turn for the worse, although it is not expected to be as wet as Friday, Mr Burkill added.
"By the time most people wake up on Sunday morning it is going to be a rather cloudy day."
Most areas of the UK are expected to see between five and 10mm of rainfall, except for Northern Ireland, which is predicted to see as much as 30mm.
Rain is expected to move eastwards throughout the day, with blustery and wet conditions set to last into early next week.
"Monday is looking pretty blustery with some heavy, thundery showers expected, but those should ease by the middle of the week," Mr Burkill said.


A 19th Century truncheon believed to have been used as an "object of authority" by a Staffordshire village constable has sold for £260 at auction.

The 213-year-old item was found when a farm, near Lichfield, was demolished in the 1960s, said Hansons Auctioneers.
The "rare" 17cm (7ins) item was used as a ceremonial object before larger truncheons were used by police forces.
It went under the hammer at Hansons' Coins, Medals and Militaria Auction in Etwall, Derbyshire.
Auctioneers corrected their original guide price of £200 to £300, to £50.
For more Staffordshire news
Charles Hanson, owner of Hansons Auctioneers, said he believed the constable's staff, decorated with a crown carrying the insignia of George III, was in good condition because it was likely to have been in the property's thatched roof for 150 years.
"Larger truncheons, as we know them today, came in with the passing of the County Police Act in 1839, which enabled a Justice of the Peace to form police forces within their counties for the preservation of the order and the protection of their inhabitants," he said.
"The very early truncheons, from Brighton and Doncaster, were decorated with bright gilt and enamel on a black ground, with Victorian arms within a garter and inscriptions. Truncheons of the Victorian period were often 15 to 18 inches long."
He said the item would now be treasured by a collector.


A toddler who died after he was found at the bottom of his family's swimming pool was probably reaching for a toy when he fell in, an inquest has heard.

Three-year-old Jack Rowe was being looked after by his older brother at their home in Upavon, Wiltshire, on 9 July - the day of his third birthday.
Salisbury Coroner's Court heard Jack had a "fear of water" and was normally reluctant to swim.
His family have called for pool gates to be made a legal requirement.
The court heard how the toddler's mother, Olivia Rowe, had left him in the care of brother Harry while she took her daughter to a school disco.
But while Harry was in the toilet, it is thought Jack tried to reach into the pool for a toy and fell in.
He was later found "unresponsive" and was taken to Southampton General Hospital, but died the following day.
Mrs Rowe described her son as an adventurous, kind little boy, but said he did not frequently use the pool.
"He never went swimming, to get him in you'd have to really bribe him," she said.
"He had no desire to go in on his own so we didn't think there was a possibility that something like that could happen."
A verdict of accidental death was recorded.


Sierra Leone is bidding to revitalise women's football in the country with the launch of a first ever league under the leadership of the nation's first ever female football association president, Isha Johansen,

The league is the first female domestic competition in the country in five years and also the first time teams outside Freetown are taking part.
But there are concerns about how the league will be sustained in Sierra Leone, which like many African countries, struggles to promote women's football.
The newest executive member of the Sierra Leone Football Association (SLFA) Foday Turay believes a lot needs to be done to continue the female league in the west African country.
"We can only sustain the league and save the women's game from a total collapse if there is proper planning which is lacking at the moment," Turay told BBC Sport.
"We need to have a well structured league system and a proper calendar.
"We lack the structure at the moment with no proper calendar and because of all these shortfalls we can't attract sponsors.
"And there won't be a good league without money and it comes from sponsorship. So we need to have a well structured league system."
Turay is also offering some tips on where to look at first in the structuring process of the women's game in his country.
"The first step to structure our women's game is to start from the grass roots and also have effective competitions in schools."
An owner of one of the teams participating in the league, Ansu Kassay, expressed similar sentiments.
"The SLFA also need to support the teams financially to help the game grow," said Kassay.
The league is currently being played at regional level and also serves as qualifiers for the national team finals.
But the league is not without a problem as teams in the Western Area have refused to take part in the competition until certain conditions are met relating to the governance of the SLFA.
Despite all the highlighted problems Sierra Leone are among 19 out of the continent's 55 members entered for the qualifiers of the 2018 Women's Under-20 World Cup.
They are set to play Libya in the first round of the qualifiers.


It was the French intellectual and writer, Albert Camus, who once wrote, "I love my country too much to be a nationalist".

Those words seem to have particular relevance to India's contemporary political milieu.
What most activists and intellectuals across India seem to have forgotten is that those who forged India's constitution were ardent liberal democrats.
They would have a tough time recognising the tortured debate about nationalism and free expression in India taking place today.
The Bharatiya Janata Party (BJP)-led government seems to have convinced itself that it has a monopoly in defining what constitutes nationalism.
To that end, it has chosen to hound intellectuals, students and activists who hold a vision of India that differs from that of their own.
The latest episode, of course, that has galvanised both the government and the opposition, involves the harassment of some student leaders at India's premier Jawaharlal Nehru University (JNU).
The students have been accused of organising an event commemorating the hanging of 2001 parliament attacks convict Afzal Guru, where "anti-India slogans" were allegedly raised.
Admittedly, much of the sloganeering, which precipitated the harsh actions of the government, was naive and self-indulgent.
Guru, a Kashmiri militant, was executed in 2013 after all his legal challenges were exhausted, and a presidential clemency plea denied.
The decision to dismiss his pleas, it needs to be underscored, had in any case, taken place under a different political dispensation. Commemorating his death anniversary hardly constituted an act of sagacious judgment.
The government could have simply condemned the callousness of the event and let matters rest.
Instead it sent the police into the campus, arrested several members of the student union and allowed at least one of them to be publicly humiliated at the time of his court appearance.
The rants of the students may well have been reprehensible. However, the government hardly covered itself in glory in resorting to the colonial era sedition law to try and cow these dissidents.
Worse still, it showed scant regard for the rights of the accused when it created permissive conditions for a group of lawyers to physically harass the student on his way to court.
These appalling actions have elicited two strikingly opposing reactions.
On the one hand, a segment of the country's intelligentsia has uncritically lionised the students.
JNU, which for decades was a bastion of left-wing sentiment, has suddenly been hailed as an arena of spirited intellectual freedom and debate.
The stridency of these assertions notwithstanding, they are, quite frankly, disingenuous.
From the time of former prime minister Indira Gandhi, JNU has given scant space to the consideration of any viewpoints that smacked of ideological conservatism. Those of that persuasion were ostracised.
The other reaction, however, is more disturbing.
The students may well have been difficult to control and were hardly models of common sense. That said, their speeches still fell firmly within the ambit of free speech.
Suggesting that such naive proclamations either challenge the foundations of the Indian republic or constitute a threat to Indian nationalism is nonsense.
Sadly, such a parochial vision of nationalism is the stock in trade of the ruling party.
Its concept of nationalism challenges the liberal democratic vision embodied in the Indian constitution.
Instead, what it is peddling is a parochial, primordial conception of nationalism that privileges the majority religious community, brooks no dissent and seeks to marginalise, or worse still, muzzle the views of those it finds distasteful.
Of course, it would be dishonest to suggest that this government alone has been hostile towards views that it finds disagreeable.
After all what did a Congress government do to protect the rights of the eminent Indian painter, Maqbool Fida Husain? Or for that matter what courage did it display in sheltering the noted but controversial Bangladeshi writer, Taslima Nasreen?
Fearful of the wrath of orthodox Muslim groups, they too have displayed pitiable fortitude in defending artistic expression that some found objectionable.
These failures had already eroded India's liberal democratic ethos.
Indeed India towards the end of the last decade of the 20th Century had already become a far cry from the land that its founders and constitution framers had envisaged.
What the country is currently witnessing is simply a more naked and blatant version of some deeply illiberal, hyper-nationalistic trends.
Virtually every political party, regardless of ideological stripe, has to varying degrees been complicit in the closing of minds in India.
Even the organised political Left, which is so vociferously crying foul over the government's high-handed actions in the name of nationalism, maintained a curious and deafening silence when unpopular views and ideas were under attack earlier.
The tragedy that now stalks the land is that many of those decrying the chest-thumping nationalism of the BJP were themselves complicit in constricting the arena of free speech.
Consequently, their strident denunciations of the BJP's ham-fisted tactics tend to ring a bit hollow.
And the BJP, which has never had much use for the pluralist, secular tenets embedded in India's constitution, now feels at liberty to intimidate and bully those who dare question its ideological writ.
It is a pity indeed that few, if any, Indian intellectuals, let alone its political class, would make common cause today with Camus' brilliant formulation - a sentiment that many of India's constitutional framers might actually have embraced.
Sumit Ganguly holds the Rabindranath Tagore Chair in Indian Cultures and Civilizations at Indiana University, Bloomington.


The first round of tickets for Harry Potter and the Cursed Child have sold out, with producers releasing a second batch, available to fans who registered for priority booking.

The first four months of tickets, for performances from 7 June-18 September 2016, went on sale at 11:00 GMT, selling out in several hours.
Many fans experienced technical difficulties trying to buy tickets.
The play is based on an original JK Rowling story.
It has been co-written by Jack Thorne and director John Tiffany,
Billed as the "eighth Harry Potter story and the first official Harry Potter story to be presented on stage", the two-part play makes its world premiere at the Palace Theatre in London's West End next summer.
Producers say more than 120,000 fans went online this morning to try and buy tickets, some of which appeared on re-sale ticket websites soon after, priced at more than Â£1,000.
The play's official Twitter account warned fans not to use the sites, writing: "Please do not attempt to resell your tickets on alternative platforms, as patrons will not be admitted into the theatre."
Tickets for the second round of dates, until January 2017, are now on sale to people who registered for priority booking. Producers say a third booking period will be opened up on Friday when seats go on sale to the general public.
Many fans expressed their frustration on Twitter, complaining of hours spent online trying to buy tickets.
Em Maree wrote: "Finally got my three tickets for the #CursedChild play but am shocked by the shambles that was the booking. 4 hours is a joke!"
Nikki Alden was one of many people reporting being bumped out of the queue, writing: "There was and error on the site right before I was about to pay for my tickets and now I'm 33,084TH in line!!!"
Meanwhile Lisa Cooke directed her frustrations directly at Potter author Rowling, writing: "This play better blow my mind @jk_rowling @HPPlayLDN ... Never been so stressed buying tickets before #CursedChild."
Producers told the BBC "the vast majority of customers had their bookings processed within an hour."
They added: "Customers who are having difficulties with the online booking system can be assured we are doing everything we can to ensure the process is a smooth and efficient as possible."
Once tickets sell out, there will be a weekly and daily lottery for all performances nearer the time. Both parts are designed to be watched in the same day - matinee and evening - or on two consecutive nights.
Previews begin on 7 June 2016 with the official opening performances of both parts on 30 July.
The story takes place several years on from the end of the last Potter book, when Harry is an overworked employee of the Ministry of Magic, a husband and father of three children.
His youngest son Albus has to take on the weight of the family legacy, and "both father and son learn the uncomfortable truth: sometimes, darkness comes from unexpected places."


The fight against so-called Islamic State (IS) will dominate talks in Washington shortly between French President Francois Hollande and US President Barack Obama.

The Paris suicide attacks claimed by IS have prompted the US to issue a worldwide travel alert to its citizens.
President Hollande is meeting other world leaders this week, hoping to forge a stronger alliance against IS.
But Turkey's downing of a Russian jet has fuelled tension over the Syria war.
Russia says a Sukhoi Su-24 warplane was shot down over Syria on Tuesday by an air-to-air missile fired by a Turkish F-16 fighter. Turkey says the Russian jet had entered its airspace.
As Turkey is a Nato member the incident has put a new strain on Russian-Western efforts to neutralise the IS threat in Syria and Iraq.
The US is unlikely to support French efforts to build a Russian-Western military alliance against IS, correspondents say. But there is some military co-ordination with Russia.
France is now sending warplanes from the aircraft carrier Charles de Gaulle, off the Syrian coast, to pound IS targets.
Russia has also stepped up air raids against anti-government rebels in Syria, since a Russian airliner was blown up over Egypt by suspected IS-linked militants last month.
But Western leaders have urged Russia to focus its raids on IS, not on other groups fighting Syrian President Bashar al-Assad.
French police are examining what appears to be a suicide bomb belt dumped on a Paris street following the 13 November attacks that killed 130 people.
It is said to resemble belts used by the attackers and was found in a suburb which a suspect is thought to have passed through after the attacks.
The key suspect, Salah Abdeslam, remains at large and a massive manhunt for him continues.
After the attacks he fled to Belgium, where he and some of the other jihadists were based.
The Belgian capital Brussels remains on high alert, with schools and the metro closed, on the fourth day of an unprecedented lockdown.
They are due to reopen on Wednesday, but the highest alert level will continue for at least another week.
Authorities fear attacks like those in Paris may be carried out in Brussels. Prime Minister Charles Michel warned that the threat remained "imminent".
How the Paris attacks are affecting Muslim children
Interview transcript: 'My brothers were manipulated, not radicalised'
Paris attacks: The unanswered questions
Paris attacks: Who were the victims?
Who were the attackers?
Special report: In-depth coverage of the attacks and their aftermath
The suspected explosives belt was found in a dustbin on Monday by Paris street cleaners in the Montrouge district, police say.
According to AFP news agency, the device lacks a detonator.
It is one of two key pieces of evidence discovered by French police and publicly linked to Salah Abdeslam. His brother Brahim blew himself up during the attacks.
A mobile phone was previously found in an abandoned car he rented. Phone data suggest that on the night of the attacks, Salah Abdeslam was in the area where the belt was later found.
Meanwhile, police swooped on a small village in south-western France, Arigat, hunting for a preacher called imam Olivier Corel, nicknamed the "White Emir", suspected of inspiring jihadists.
In other developments:
How is Brussels affected by terror threat?
Belgian police have charged a fourth suspect with terrorism offences related to the Paris attacks, the federal prosecutor said.
Mohammed Amri, 27, and Hamza Attou, 20, have already been charged with aiding Salah Abdeslam. A third, unnamed suspect has also been charged.
Monday: Met UK Prime Minister David Cameron in Paris
Tuesday: In Washington to meet US President Barack Obama
Wednesday: Meets German Chancellor Angela Merkel in Paris
Thursday: Goes to Moscow to meet Russian President Vladimir Putin
Sunday: Meets China's President Xi Jinping in Paris
Mr Hollande's search for allies


Conservatives at the Greater London Authority at City Hall have called for urgent action over "catastrophic" blunders during Thursday's polls.

Tory group leader Gareth Bacon said the errors in Barnet, north London, led to a five-hour delay in counting and voters being turned away.
Mr Bacon is seeking cross-party support in demanding action at the London Assembly's first meeting on Monday.
London Elects and Barnet Council have promised to investigate the issues.
The Tories were just short of securing an additional list member on the London Assembly and group Mr Bacon believes missing votes could have made the difference.
Calling for cross-party support for the inquiry, Mr Bacon said: "The total incompetence of London Elects and Barnet Council in their handling of this ballot has led to serious questions over the London-wide list result and caused huge delays in the counting process.
"To have voters turned away for any reason is completely unacceptable. The votes that were unable to be cast could very well have altered the result of the London-wide list allocation.
"We are demanding a full explanation for this abysmal administrative performance."
London Elects, the independent organisation responsible for overseeing the elections, said "minor discrepancies in mayoral figures" caused the delay in mayoral results being announced after midnight.
Checks at City Hall on the Mayoral figures highlighted some small discrepancies in the numbers for each candidate, although it would not have affected the outcome.
Promising to investigate, Greater London returning officer Jeff Jacobs said: "Obviously we regret the delay - but it was absolutely right and proper to take the few additional hours in order to ensure we produced a robust set of figures."
On Thursday, Barnet Council apologised after a problem with the poll list on all 155 polling stations, which resulted in many voters being turned away. It said a "printing error" was to blame for names missing from the list.
Newly-elected London Assembly Members also signed in to their role at City Hall on Saturday as the new mayor Sadiq Khan was sworn in at Southwark Cathedral.


A linguistic mystery has arisen surrounding symbol-inscribed stones in Scotland that predate the formation of the country itself.

The stones are believed to have been carved by members of an ancient people known as the Picts, who thrived in what is now Scotland from the 4th to the 9th Centuries.
These symbols, researchers say, are probably "words" rather than images.
But their conclusions have raised criticism from some linguists.
The research team, led by Professor Rob Lee from Exeter University in the UK, examined symbols on more than 200 carved stones.
They used a mathematical method to quantify patterns contained within the symbols, in an effort to find out if they conveyed meaning.
Professor Lee described the basis of this method.
"If I told you the first letter of a word in English was 'Q' and asked you to predict the next letter, you would probably say 'U' and you would probably be right," he explained.
"But if I told you the first letter was 'T' you would probably take many more guesses to get it right - that's a measure of uncertainty."
Using the symbols, or characters, from the stones, Prof Lee and his colleagues measured this feature of so-called "character to character uncertainty".
They concluded that the Pictish carvings were "symbolic markings that communicated information" - that these were words rather than pictures.
The Kingdom of the Picts
Prof Lee first published these conclusions in April of this year. But a recent article by French linguist Arnaud Fournet opened up the mystery once again.
Mr Fournet said that, by examining Pictish carvings as if they were "linear symbols", and by applying the rules of written language to them, the scientists could have produced biased results.
He told BBC News: "It looks like their method is transforming two-dimensional glyphs into a one-dimensional string of symbols.
"The carvings must have some kind of purpose - some kind of meanings, but... it's very difficult to determine if their conclusion is contained in the raw data or if it's an artefact of their method."
Mr Fournet also suggested that the researchers' methods should be tested and verified for other ancient symbols.
"The line between writing and drawing is not as clear cut as categorised in the paper," Mr Fournet wrote in his article. "On the whole the conclusion remains pending."
But Prof Lee says that his most recent analysis of the symbols, which has yet to be published, has reinforced his original conclusions.
He also stressed he did not claim that the carvings were a full and detailed record of the Pictish language.
"The symbols themselves are a very constrained vocabulary," he said. "But that doesn't mean that Pictish had such a constrained vocabulary."
He said the carvings might convey the same sort of meaning as a list, perhaps of significant names, which would explain the limited number of words used.
"It's like finding a menu for a restaurant [written in English], and that being your sole repository of the English language."


Accrington Stanley edged closer to promotion to League One as Mark Hughes' second-half tap-in saw them beat Wycombe Wanderers.

Stanley will guarantee a first-ever season in the third tier if they win at home to Stevenage on 7 May.
The Lancashire side remain two points clear of Bristol Rovers, who were 4-1 winners at York City.
Hughes tapped in from close range after Wycombe keeper Benjamin Siegrist tipped Josh Windass's free-kick onto the post.
Wycombe went close to taking an early lead when Aaron Pierre fired over from close range.
But the Chairboys' debutant keeper Siegrist, who is on loan from Aston Villa, kept them in the game in the early stages by denying Windass and Brad Halliday.


Aboriginal Australians have expressed concerns that a government plan to develop the country's north will undermine their land rights.

The government research paper outlines an ambitious 20-year plan for the largely undeveloped region.
It includes proposals for new roads, airstrips, dams and changes to land-use laws to allow more development.
But one Aboriginal leader said he feared the proposal was a "Trojan horse" to undermine native title.
The government's white paper was a "welcome focus on the north" said Noel Pearson, an influential Aboriginal leader from Cape York in far north Queensland.
"But this approach is full of threat and full of opportunity," said Mr Pearson.
Speaking on Australia's ABC TV on Friday, he said: "Our concern is that governments, including the Commonwealth, see this as a Trojan horse to undermine Mabo."
He was referring to the landmark 1992 court ruling recognising native title in Australia.
Native title recognises the traditional rights and interests of Aboriginal and Torres Strait Islander people to land and waters they can prove a long-standing connection to but does not extinguish freehold title or pastoral leases.
Mr Pearson warned the government it must negotiate with Aboriginal people, who make up a large part of the north's population and own much of the land under native title.
He said there was a big chance developers would try to "sideline" Aboriginal concerns and that they would end up with "scraps off the table" of any major development.
The government's plan, launched officially on Friday, includes a A$600m ($545m; Â£343m) roads package to upgrade transport infrastructure, and a A$200m water infrastructure fund.
Land-use laws in the north have led to long delays and cost blowouts in construction and mining projects over the past decade, so the white paper includes support for native title bodies and new surveys to start simplifying land arrangements.
Governments have talked in the past of opening up the north of Australia to more development, especially agriculture.
However, monsoonal weather in some parts of the region, very dry weather elsewhere, and poor soils have been seen as barriers to successful large-scale farming.
The government hopes to attract billions of dollars in cash from overseas investors.


Costa Rica head coach Paulo Wanchope has resigned after being involved in a brawl during a match against Panama.

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The 39-year-old former Derby County and Manchester City striker retaliated after being pushed by a steward during the under-23 Olympic qualifier on Tuesday.
The struggle between the two men ended when security guards pulled them apart.
"Following a meeting, the manager Wanchope has decided to step aside," said a Costa Rica statement.
Wanchope said he got angry when the steward stopped him getting to the pitch.
He said: "He denied me access even though I had accreditation. Then I decided to open the gate myself. Then I was pushed by the steward who was there and I pushed him back. You could all see that."
The former West Ham player added: "A thousand apologies to everyone in Panama for this incident, obviously also to Costa Rica for what has happened.
"I have always been known for defending my country, and behaving in the best possible way. We're human beings and I reacted in a way that was wrong."


The team behind Nasa's Dawn mission to Ceres has released striking new images, but remains unable to explain the dwarf planet's most intriguing mystery.

Bright spots within a 90km-wide crater have baffled scientists since the probe spied them on its approach.
Now in orbit around Ceres, Dawn is gathering detailed data about the world's geology and its composition.
Mission researchers described the latest images at the European Planetary Science Congress in Nantes, France.
Currently, their best guess to account for the spots is an expanse of some type of salt - but this is speculation.
"We haven't solved the source of the white material," said the mission's principal investigator Chris Russell from the University of California Los Angeles.
"We think that it's salt that has somehow made its way to the surface. We're measuring the contours, trying to understand what the surface variations in that crater are telling us."
Ceres is a 950km-wide dwarf planet sitting in the Solar System's asteroid belt. Dawn is currently orbiting it at a distance of 1,470km and imaging the entire surface every 11 days.
It was eight years ago this week that Dawn blasted off on its mission from Cape Canaveral, Florida.
Before arriving at Ceres six months ago, the spacecraft dropped in on the asteroid Vesta for just over a year in 2011 and 2012.
The latest release of data includes a new topographic map, showing the shape of Ceres' entire surface in the most detail yet.
"The irregular shapes of craters on Ceres are especially interesting, resembling craters we see on Saturn's icy moon Rhea," said deputy mission chief Carol Raymond from Nasa's Jet Propulsion Laboratory in California. "They are very different from the bowl-shaped craters on Vesta."
There is also a colour-enhanced mosaic image that offers clues about what the dwarf planet is made of - arguably asking more questions than it answers.
"There's an interesting blue ring here," Prof Russell told a media briefing at the conference. "We have absolutely no idea what that blue ring is due to.
"And there are streaks across the surface that point back to the Occator Crater with its bright spots. We are poking at this, and we're looking for ideas, but we haven't solved the problem yet."
An oddly shaped mountain that towers 6km above relatively flat surrounding terrain is also puzzling the team, Prof Russell added, because it does not look like the result of known geological processes.
"We're having difficulty understanding what made that mountain," he told reporters.
In October, Dawn will start dropping to its final target altitude of 375km for an even closer look at Ceres. This will be its final home. Even after it ceases operations in mid-to-late 2016, the probe is expected to stay in this stable orbit and become a permanent fixture in the dwarf world's sky.
"We're not going to leave Ceres. We're going to stay in Ceres orbit forever," Prof Russell said.
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An east London mayor has been removed from office and a poll declared void after he was found guilty of electoral fraud.

An Election Commissioner concluded Tower Hamlets mayor Lutfur Rahman breached election rules and must vacate his post immediately.
Four voters alleged he used "corrupt and illegal practices" in last year's election, which must now be re-run.
Mr Rahman, who denied any wrong-doing, has been banned from standing again.
At the special High Court hearing, Election Commissioner Richard Mawrey also ordered Mr Rahman to pay Â£250,000 in costs.
One of Mr Rahman's aides, Alibor Choudhury, was also found guilty of corrupt and illegal practices.
Tower Hamlets First, Mr Rahman's party, said the judgement was a "shock" and it was seeking further legal advice in relation to a judicial review.
Mr Mawrey - who sat as a judge - said the mayor had "driven a coach and horses through election law and didn't care".
In the Election Court judgement, he said the effect of his ruling that Mr Rahman's election was void meant it was as if the election "had never taken place" and he had not lawfully been mayor since he was re-elected for a second term on 24 May 2014.
Mr Mawrey also added: "The evidence laid before this court...has disclosed an alarming state of affairs in Tower Hamlets.
"This is not the consequence of the racial and religious mix of the population, nor is it linked to any ascertainable pattern of social or other deprivation.
"It is the result of the ruthless ambition of one man."
Mr Mawrey also described Bangladesh-born Mr Rahman as an "evasive and discursive witness whose evidence was untruthful on occasion" and suggested he had played "race" and "religious" cards.
By Karl Mercer, Political Correspondent, BBC London News
Mr Rahman's career in politics looks like it is over, unless he successfully challenges today's ruling.
But the implications of the case could be felt much wider than a courtroom on The Strand. How will the Bengali community in Tower Hamlets, many of whom voted for Mr Rahman, react? What will the judgement's impact be on community cohesion?
And for the government - should the Law Commission be asked to look at making it easier to challenge elections if there is a suspicion of fraud?
It took four local individuals in this case to risk a legal bill of hundreds of thousands of pounds to get this election overturned.
The re-run poll is likely to be on either the 7 or 11 June.
Mr Rahman ran a "ruthless and dishonest campaign to convince the electorate his rival John Biggs was a racist", Mr Mawrey said.
After the ruling, Labour London Assembly member, Mr Biggs, said Mr Rahman and his allies had "robbed the people of Tower Hamlets of the free and fair mayoral election they deserved and betrayed everyone in our community who trusted and voted for him".
The group of voters who brought the action was headed by Andy Erlam, who stood as a councillor. He said it was "a fantastic result for democracy".
The four voters mounted the legal challenge under the 1983 Representation of the People Act.
Their lawyers made a series of allegations, including "personation" in postal voting and at polling stations and ballot paper tampering.
The Election Commissioner upheld a number of the allegations, including:
Lawyers for Mr Rahman, who was re-elected for Tower Hamlets First last May, described the claims as "invention", "exaggeration" and "in some cases downright deliberately false allegations".
The Election Judgement said Mr Choudhury, who was also found guilty of illegal practices, must immediately vacate his seat as a councillor and a new by-election must be held in the Stepney ward.
In a statement, Tower Hamlets First said: "The Mayor strongly denies any wrongdoing and had full confidence in the justice system and so this result has been surprising to say the least."
Communities Secretary Eric Pickles said the Election Court's judgement justified his decision to send commissioners into the council last year to take over some operations.
He said: "This judgement vindicates our action to intervene."
He added the judgement against Mr Rahman could mean extra powers being handed to commissioners.
The Met Police said it takes allegations of electoral fraud and malpractice extremely seriously and would take time to consider the election judgement.
Speaking to BBC London 94.9, former London mayor, Ken Livingston, said he found the result of the Election Court "worrying".
He said: "Let's wait and see if he is convicted of anything. The decision of the voters to put Lutfur Rahman there shouldn't be overturned by an unelected bureaucrat unless he is arrested."


Kilmarnock have bolstered their squad with the signing of left-back Calum Waters from League One Alloa.

The Glasgow-born defender, 21, was with Celtic's development squad before spending a season on loan at Dumbarton.
He moved on to Alloa in May 2016, helping them reach the Scottish League Cup quarter-finals last season.
"Obviously it is a big step up but I feel I am more than capable of making the step up," said Waters, who has signed a two-year contract.
"I played a lot of games last season and playing with senior pros helped me a lot, I got my confidence back.
"I want to play more games here and the fact the management here are willing to play younger players is what I am looking for at this stage of my development.
"The fans can expect a lot of energy from me and someone who will give their all and fight for every ball. That is my game - up and down the line all game."
Waters joins fellow defender Daniel Higgins and midfielder Alan Power as new arrivals at Rugby Park.
Kilmarnock begin their League Cup campaign away to Ayr United on Friday, 14 July, and open their Scottish Premiership campaign at home to St Johnstone on 5 August.
Find all the latest football transfers on our dedicated page.


Friends and family of rock singer Chris Cornell have paid their respects at his funeral service in Los Angeles.

Actors Brad Pitt, Christian Bale and Josh Brolin attended as well as singers Pharrell Williams and Courtney Love.
Dozens of fans congregated outside the Hollywood Forever Cemetery to say goodbye to the grunge rocker.
Cornell, who killed himself earlier this month, battled throughout much of his career against drug and alcohol addiction in addition to depression.
The ashes of the 52-year-old Soundgarden and Audioslave lead singer were interred in the "Garden of Legends" alongside Johnny Ramone at the cemetery, which describes itself as "the resting place of Hollywood's greatest stars".
Eulogies were delivered by Brolin and the singer's former bandmates Kim Thayil, Tom Morello and Matt Cameron.
A version of Leonard Cohen's Hallelujah was also performed on an acoustic guitar.
Cornell's widow Vicky and his three children were among hundreds who gathered at the open-air ceremony. Cornell was cremated at a far more low-key event on Tuesday.
Mourners later visited his grave to the accompaniment of his best known Soundgarden song, Black Hole Sun.
Friday's funeral programme featured a quote from Cornell: "We are neighbours in a modern world where proximity is relative and the threshold to our hearts moves outside time and space."
Fans were allowed to watch the proceedings from a distance alongside the media - they were later allowed to visit his grave.
Cornell was found dead in his hotel room on 17 May after performing a show in Detroit. Officials later confirmed he had hanged himself.
Singer Alice Cooper called him "the best voice in rock and roll" while Sir Elton John said he was "a great singer, songwriter and the loveliest man".


Graeme Souness has revealed that current Celtic assistant manager John Collins could have been his first high-profile signing for Rangers.

And Republic of Ireland midfielder Ray Houghton was another who had the chance to pip Mo Johnston to the headlines that were made around the world.
It is 30 years this summer since Souness succeeded Jock Wallace at Ibrox and quit Sampdoria in a move that stunned the Scottish game.
And only the consequent signing of Johnston matched - or maybe even eclipsed - that fuss.
"It wasn't about signing Catholics, it was about signing good players," he told BBC Scotland in an exclusive interview reflecting on how he revolutionised life at the Ibrox club. "I didn't care what religion they were and Collins and Houghton were top players
"My wife was a Catholic, my kids were christened catholic and I really couldn't see what the problem was.
"The signing of Mo was a result of a chance meeting. I saw the headlines which suggested Mo had signed for Billy McNeill from Nantes and I didn't plan to hi-jack that.
"Days later, Mo's agent, Bill McMurdo, was leaning against a radiator in reception at Ibrox and, as I passed him, I commented that, if he had let me know, we would have been interested.
"He asked me if I meant it and I asked him if Mo would come. He confirmed he would and then he crossed the reception in about half a second.
"We talked in my office and, by the time I was driving home to Edinburgh, the idea in my brain had grown from an acorn to a medicine ball."
But Souness had pledged three years earlier to sign a Catholic.
On a flight across the Atlantic to the 1986 World Cup when I was working for the Glasgow Evening Times, he pulled me aside, ordered a first bottle of Champagne and asked me - as a Glaswegian - about life in the city.
He was wearing a cross round his neck and he explained that his wife bought it for him and that it was trendy. I had absolutely no issue with that, but I suggested to him that, at that time, some Rangers fans might see it differently.
By the time the second bottle of bubbly arrived, I asked him if this stuff was for use in the paper. He agreed it was and, by the time I arrived in Santa Fe, where the Scotland team were basing themselves ahead of Mexico, I had a belter of an exclusive.
He says now: "I was naive about what Rangers were about. In a sense, I was a 'foreigner' because I had left Edinburgh for a career played out entirely in England and Italy.
"None of that religious stuff mattered to me. It used to be the second or third question when I was interviewed. Would I sign a Catholic? Of course I would.
"We changed things and have they changed for the better? Of course they have.
"I remember that conversation. I paid for the Champagne."
In truth, it was either the Scottish FA or the airline, British Caledonian, who footed the bill, but either way Souness was off and running.
"Rangers were in turmoil," he said. "You don't get a manager's job at a big club unless it is in a mess. The pressure was on.
"You have to remember that, save for being let go by Spurs as a kid, I had known nothing but success.
"I was sold by Middlesbrough to Liverpool for a record fee between two English clubs and then won European Cups at Anfield, but I couldn't have been prepared for Rangers.
"I was a fan as a kid and attended a lot of European nights at Ibrox. I knew the club were big. But not how big."
Souness appointed Walter Smith as his assistant and never regretted it. "He was fabulous for me," he said. "Although his dress sense was desperate. We sorted that out and he was great. I was completely raw as a manager and nothing had prepared me.
"I wish they had come for me when I was 30 so Rangers fans could have seen the best of me as a player. I had become a hothead."
And that was never better underlined than on his debut for the club in the sunshine of Leith at the beginning of the next season.
"It was all Walter's fault," he recalls. "He suggested that Billy Kirkwood of Hibs might leave a bit of his studs in. It was a red rag to a bull.
"I was hyped up and, by the time of that challenge on George McCluskey, I had made a complete fool of myself. It was outrageous what I did and I have apologised 100 times.
"It wasn't a case of mistaken identity, I just couldn't see for the red mist.
"I was sent off, of course, and then I remembered my dad was in the directors' box and, as I walked towards the tunnel, I could only see the top of his head.
"It was bowed in embarrassment or shame. I knew immediately what a fool of myself I had made."
That is only one of the regrets Souness has as he reflects on his time in Glasgow. He reflects on letting winger Davie Cooper leave the club for Motherwell.
"I let him go because of our personal friendship," he said. "He wanted to play regularly, but I couldn't guarantee that and I did him a favour.
"But he could open doors as a player and I should have kept him. It was a big mistake. He was a fabulous player."
Souness also put the record straight on his relationship with striker Ally McCoist.
"Could he have looked after himself better? 100%. I got after him," he said. "I pushed him, but there was no personality clash and I loved his company.
"We had the most incredible dressing room and the single biggest reason was McCoist.
"His banter with the English players was magnificent. He used to give Terry Butcher dogs' abuse and it was a miracle big Tel didn't strangle him."
Souness eventually quit Ibrox for Liverpool after twice rejecting their advances but was invited by Rangers' owner David Murray to take a year out and return.
"I should have taken his advice," he admitted.
You can listen to Chick Young's interview with Graeme Souness on Friday's Sportsound on BBC Radio Scotland, the programme starting at 18:30 BST.


A victim of sexual and physical abuse at a south London children's home has spoken out for the first time.

Paul Annon said he was abused by a man and a women while living at Shirley Oaks, in Croydon, in the 1960s and 1970s.
The 51-year-old was speaking after the publication of a report which found abuse took place at the home on an "industrial scale".
Mr Annon said he was just five years old when the abuse started.
A report from the Shirley Oaks Survivors Association (Sosa) has named 27 men as alleged abusers and links 20 deaths to the home.
Two of the people named in the report - William Hook and Philip Temple - have been convicted of child sexual abuse.
In an interview with the Press Association, Mr Annon said whenever he tried to tell someone about the abuse "it would fall on deaf ears".
"A big man used to come into the room and sexually abuse me, and a woman would come in" he said.
Mr Annon said he was unable to remember the names of his abusers because of how young he was at the time.
"I didn't really understand it at the time" he added.
Mr Annon was put into care with his two brothers after their mother died, and lived at the children's home between 1969 and 1979.
His experiences have impacted his relationships, pushed him into drug taking and drinking and left him feeling "worthless", he said.
Mr Annon also blames the abuse for the premature death of his brother, who died nine days before his fiftieth birthday from cirrhosis of the liver.
"What happened to him pushed him to what he did" Mr Annon said.
In the wake of the findings within the report Lambeth Council announced it will compensate former residents of Shirley Oaks.


Linfield striker Andrew Waterworth says his side's season "probably boils down to" Saturday's Irish Cup quarter-final against Crusaders at Seaview.

The Blues trail the Premiership leaders by seven points but are unbeaten in four games against the league champions in all competitions this season.
"The league is probably over so this match is massive," said Waterworth.
"We relish these games and have proven we are every bit a match for Crusaders. We will go there full of confidence."
"Seaview is a very hard place to go and Crusaders are a good side but these are the sort of games you want to be involved in," added the Linfield forward.
The Windsor Park side's last Irish Cup triumph came back in 2012 when they beat Crusaders in the final, while their opponents are hoping to bridge an eight-year gap since their last success in the competition.
The teams drew 0-0 in their first two league meetings of the season, but the Blues emerged victors from the New Year's Eve clash between the pair at Seaview and then defeated Stephen Baxter's outfit 3-1 in the County Antrim Shield final last month.
"Linfield have got the better of us in the last couple of games and deservedly so. A cup game is completely different and it's up to us to find a way through," said Baxter.
The draw for the last eight of the country's premier knockout prize also threw up two tasty derby ties between Ballymena United and Coleraine and mid-Ulster rivals Portadown and Glenavon.
The Braidmen have enjoyed the better of their encounters with the Bannisders so far this campaign, winning one and drawing one of their league clashes, and seeing off Oran Kearney's charges after extra-time at the semi-final stage of the League Cup.
"Oran has taken his team on an unbelievable run. They are absolutely flying," said Jeffrey in light of Coleraine's recent unbeaten sequence of eight wins and a draw from nine games.
Kearney observed: "We have not performed well in the Irish Cup in recent years and we want to put that right. With losing to Ballymena in the League Cup semi-final, we want to put that right too.
"David has made a massive difference at Ballymena - he's a fantastic manager with all the experience in the world and knows the game inside out.
"We are excited and looking forward to it. I love big games and these are the ones that keep us going.
"I think teams like ourselves and Ballymena have closed the gap a bit to make it a hyper competitive league. We are not in a position yet maybe to challenge for league titles but we are capable of winning cups," added Kearney, who must plan without suspended full-back Adam Mullan.
Portadown manager Niall Currie foresees few changes from the side which has secured impressive league draws with Linfield and Crusaders in recent weeks for his side's match with holders Glenavon at Shamrock Park.
"We have won it twice in the last three years so we don't want to let go of the trophy lightly," said Lurgan Blues' assistant boss Paul Millar.
In the day's final quarter-final, Dungannon host runaway Championship leaders Warrenpoint Town at Stangmore Park, with Swifts manager Rodney McAree wary of a potential upset.
"We've had them watched a couple of times and Matthew (Tipton) has his team playing very well. It's going to be extremely difficult for us," said McAree.
"It's good to have a home draw in the quarter-finals of a major cup competition and it's one we are looking forward to but we aren't taking them lightly.
"I love the feeling of waking up on an Irish Cup day. You are always living the dream but it's a question of getting over the next hurdle and for us that next hurdle is Warrenpoint. We will do our utmost to try and win it."
Warrenpoint are on a run of 17 matches unbeaten in the Championship, a series of results stretching back to 24 September 2016.
"Dungannon go in as favourites and we'll give them the respect they deserve. We probably won't dominate the game in the way we often do in Championship football but we'll give it a good go and hopefully upset the odds," said 'Point manager Tipton.


Great Britain's Andy Murray will be hoping to maintain his good form at this year's Wimbledon when he takes on Australia's John Millman on Saturday.

Murray is the last British player left in singles' competition after defeats for Dan Evans and Tara Moore on Friday.
In the opening two rounds, Murray, the 2013 Wimbledon champion, has not lost a set and only dropped 15 games.
"If you can win matches easily it does help because you can rest. It has been a good start," he said.
Millman, 27, is ranked 67th in the world and nearly quit tennis after suffering a serious shoulder injury three years ago.
"I worked in the City for a little bit at one of my mate's companies - I was dressed up in a suit each day going in," said Millman, who admitted he had "never been inside Centre Court or Court One".
"I really have an appreciation of these moments right now, because there was a big time there where I wasn't too confident.
"You dream of playing on the biggest courts against the biggest players. I feel as if I deserve to be there and I'm going to give it everything."
That third-round match is scheduled to be second on Centre Court on Saturday and will be the first time Murray and Millman have met in a Grand Slam.
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Murray has only played Millman once, winning two sets to one in the second round of the Brisbane International on a hard court in January 2013.
"I didn't know him before we played in Brisbane," said the world number two. "He played extremely well that day. He was ranked about 200 at the time.
"I came off the court and I said to Dani Vallverdu, who I was working with, 'He's top 50 for sure if he keeps going'.
"He moves well and has a great attitude. But obviously it's a different surface, different place. The match-up will be a bit different on a grass court."
World number one Novak Djokovic has won 30 Grand Slam matches in a row, with his last loss coming against Stan Wawrinka in the final of the French Open in June 2015.
But he has a fight on his hands when he resumes on Court One on Saturday two sets to love behind against America's 28th seed Sam Querrey.
Querrey took the first set on a tie-break before cruising through the second 6-1 only for the rain to arrive, meaning they have to conclude their third-round match on Saturday.
"Querrey maintained his level and Djokovic looked as though he was uninterested," four-time Wimbledon semi-finalist Tim Henman told BBC Sport.
"He obviously isn't but since he is down two sets to love he will be happy to have a break and talk to his team.
"He has got to draw on last year's experience. He is certainly hoping that history repeats itself."
Last year, Djokovic trailed South African Kevin Anderson by the same margin in their last-16 tie when bad light stopped play and the Serb came back to win a day later.
Australia's Nick Kyrgios, who beat German Dustin Brown in a five-set thriller on Friday, is also in action on Court One on Saturday.
He takes on Spain's Feliciano Lopez with the winner playing the victor of the Murray-Millman match in the last 16.
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Two-time Wimbledon champion Petra Kvitova is going to have a busy schedule if she is going to have more success at the tournament, as she is yet to finish her second-round singles match.
She returns on Saturday with work to do to stay in the competition after losing the first set 7-5 to Russia's Ekaterina Makarova.
Canadian Eugenie Bouchard, a Wimbledon runner-up two years ago, defeated British number one Johanna Konta on Thursday and is in action against 19th seed Dominika Cibulkova.
Wimbledon organisers have already announced that there will be play on the middle Sunday of the tournament for the first time since 2004.
The opening week's schedule has been disrupted by rain delays and there could be more frustration for tennis fans on outside courts on Saturday.
Steve Cleaton of BBC Weather said: "It will be bright, breezy and dry for lengthy periods, but there will be the risk of occasional showers through the course of the day.
"Any showers should move through fairly quickly, but they could be heavy."
You can now add tennis alerts in the BBC Sport app - simply head to the menu and My Alerts section


The UK, US and Libyan governments have vowed to work together to reveal "the full facts" of the Lockerbie bombing which claimed 270 lives.

The administrations also expressed their deep condolences to the families of the victims.
The announcement came in a joint statement as memorial events were held on the 25th anniversary of the tragedy.
They said they wanted "all those responsible for this most brutal act of terrorism brought to justice".
The statement by the three administrations said: "On the 25th anniversary of the bombing of Pan American flight 103 over Lockerbie on 21 December 1988, the governments of Libya, the United Kingdom and United States of America reiterate their deepest condolences to the families of the victims of this terrible crime.
"We want all those responsible for this most brutal act of terrorism brought to justice, and to understand why it was committed.
By Andy MooreBBC News
A one-minute silence was broken by a single piper playing the lament Flowers of the Forest.
At three minutes past seven - the time Pan Am 103 was blown up -the names of the 270 victims were read out and candles were lit in their memory.
The Rev John Mosey, whose 19-year-old daughter Helga was killed at Lockerbie, delivered the sermon.
His theme was "don't be overcome by evil, but overcome evil by doing good".
Dr Jim Swire, whose daughter Flora was another victim, told the congregation that he did not believe that the British and American governments had told all the truth about the tragedy.
This service was organised by the parents of some of the British victims.
Many of them are now in their 70s. They believe this will be the last Lockerbie memorial at Westminster Abbey.
"We are committed to co-operate fully in order to reveal the full facts of the case."
Scotland's top law officer Lord Advocate Frank Mulholland announced this week that Libya had appointed two prosecutors to work on the investigation into the bombing.
The joint statement continued: "We will all provide full support to the investigation team to enable them to complete their inquiries successfully.
"We are striving to further deepen our co-operation and welcome the visit by UK and US investigators to Libya in the near future to discuss all aspects of that co-operation, including sharing of information and documents and access to witnesses."
Libyan Abdelbaset al-Megrahi was the only person convicted of the bombing.
He was released from jail by the Scottish government on compassionate grounds after being diagnosed with prostate cancer, and died last year protesting his innocence.
The joint statement by the three administrations was released as memorial events were being held in the UK and the US to mark the 25th anniversary of the bombing of Pan Am 103 above Lockerbie.
Wreaths were laid at Dryfesdale Cemetery in the town and a service took place in a local church.
Scotland's First Minister Alex Salmond and Lord Wallace, Advocate General for Scotland, were among those who took part in the ceremony.
The service was led by the Rev John MacLeod, while readings and prayers were given by Major Kingsley Layton, commanding officer at Lockerbie Corps, the Salvation Army, and Lord Lieutenant Jean Tulloch, representing the Queen.
During the service Mr MacLeod said: "It is 25 years after the day on which certain men chose to set aside their humanity and destroy the lives of 270 people in the air over this area of Scotland and here in the little town of Lockerbie - not only their lives but also those who survived, families and friends.
"What we the people of Lockerbie in this area will never tire of saying is we welcome you once again to this place where you know you are always welcome.
"In doing so we seek to comfort and console you."
Speaking to BBC News after the wreath-laying, Mr Salmond said: "Out of disaster, there are the bonds of friendship.
"Lockerbie has been a welcoming place for the relatives of those who died, and over the last 25 years has taken as good care of people as it possibly could.
"I don't think you ever move on, you certainly never forget, but people do rebuild their lives and many have."
In the US, people gathered at the memorial cairn in Arlington National Cemetery, near Washington DC.
US Attorney General Eric Holder spoke during a ceremony there.
He said: "Although a quarter century has passed since the world was shaken - and so many lives were devastated - by a heinous and cowardly act of terror, no amount of distance or time can ease the pain, or erase the loss, that was inflicted on that day.
By James CookScotland correspondent, BBC News
It was the shortest day of the year and, for Lockerbie, the longest and darkest night.
For many years this little town has been torn between respect for the dead and a desire to move on and rebuild.
Today though it chose, once again, to stand still in remembrance and to offer a hand of friendship to those who had come from afar to do the same.
189 Americans died aboard Pan Am flight 103 and many of those in Dryfesdale Cemetery had travelled across the Atlantic to feel closer to their loved ones.
The 25th anniversary of the bombing may mark the last big memorial service at this windswept spot.
But for those who stood here today in the gathering gloom, the grief was undimmed and the bonds unbroken as the people of Lockerbie again opened their doors and their hearts.
"Even now, it remains difficult to comprehend the magnitude of such a senseless crime - which claimed the lives of 259 innocent men, women, and children in the skies above Scotland, along with the lives of 11 residents of the peaceful town of Lockerbie."
There has also been a service at Syracuse University in New York state, which lost 35 students returning from Europe on the Pan Am flight.
Senior Scottish officials and UK government representatives attended a service at Westminster Abbey.
The Reverend John Mosey, whose daughter Helga was killed in the bombing, gave an address during the London service and insisted that the "vicious circle of hatred and aggression" must be broken.
He said: "We remember those we lost with love, sorrow and pain but it is what we do with this other remembering that can affect, not only our personal lives but the wider world we live in."
The Lockerbie bombing remains the deadliest act of terrorism ever committed in the UK and until the attacks of 9/11 it was also responsible for the biggest single loss of American lives in such an attack.
The Boeing 747 was just over half an hour into its flight from London to New York when it exploded, seconds before 19:03 UK time, on 21 December 1988.
All 243 passengers and 16 crew died, and a further 11 people were killed in their homes when wreckage hit the ground in Lockerbie.
Encyclopaedia Britannica: Pan Am flight 103
Canon Patrick Keegans, who was parish priest at Lockerbie at the time of the bombing, said the anniversary had "brought to the surface many, many emotions people have had over the past 25 years".
"Other anniversaries have been calmer. This one makes us remember the devastation and horror that all of us experienced 25 years ago," he told BBC Breakfast.
The majority of the passengers and crew on board the aircraft were US citizens.
UK Prime Minister David Cameron paid tribute to the "fortitude and resilience" of those affected by the Lockerbie bombing.
He said: "Over the last quarter of a century much attention has been focused on the perpetrators of the atrocity. Today our thoughts turn to its victims and to those whose lives have been touched and changed by what happened at Lockerbie that night.
"To families, friends, neighbours, loved ones, and all those caught up in the painful process of recovery, let us say to them: our admiration for you is unconditional.
"For the fortitude and resilience you have shown. For your determination never to give up. You have shown that terrorist acts cannot crush the human spirit. That is why terrorism will never prevail."
Former Lebanon hostage Terry Waite said he believed the conviction of al-Megrahi was "very shaky indeed" and called for a further investigation into the atrocity.
Speaking after the Westminster Abbey service he said: " I think a thorough, in-depth, further investigation is required to get to the truth, because that's what we owe the families; that truth and justice be done, and I'm not sure we've got to the truth at all yet."


When it comes to understanding the challenge facing the nation on obesity, yoghurt is a good place to start.

It's one of the most common items in our shopping basket. We spend more on it than we do on crisps and bacon.
In its normal state - natural full-fat - it's pretty good for you. It can boost your immune system, is good for your bones and is great at satisfying hunger.
The problem is that a great deal of the yoghurt we buy is not the natural stuff. Instead we seem to like the processed products, which are made by partly substituting yoghurt and adding a combination of other ingredients such as gelatine, sugar and flavourings. It tends to be cheaper to produce per calorie, but nowhere near as good for you.
Read: Is breakfast a waste of time?
Watch: How healthy is your breakfast?
Read: Low-fat or high-fat - does it matter?
Read: Is butter back and is saturated fat good for you?
The Food Foundation campaign group has taken a look at this. In a report earlier this year, the group analysed Muller Corner yoghurts, the brand leader accounting for about 15% of the market.
Muller produces a number of different types, one of which is the crunch corner series of yoghurts. They contain between 21g and 30g of sugar - most of this is from added sugars rather than natural sugars from milk.
For a young child these products can contain almost enough sugar to take them close to their daily recommended sugar intake. For adults they commonly have enough to take them over the halfway mark.
To support sales, Muller Corner heavily invests in advertising. It is the dairy industry's biggest spender - investing over Â£10m a year in 2015, the Food Foundation report said.
The vast majority went on TV adverts, including during X Factor, which, while watched by many children, is not covered by the ban on junk food advertising, which only applies to programmes aimed solely at children.
Muller, as you would expect, defends its brands, pointing out it has a range of products, including Mullerlight and Muller Rice, and that it is clear all its products should be consumed as part of a "varied and balanced diet".
But this doesn't wash for campaigners. It wants tighter restrictions on the food industry believing the way food is now produced, marketed and promoted is to blame.
Some 58% of advertising spend is on confectionary and convenience food, compared to only 3% on fruit, vegetables and pasta.
Less healthy foods are a three times cheaper source of calories than healthy foods, while promotions cause us to buy 20% more than we would otherwise.
Campaigners call this the obesogenic environment and say it is a major reason why we are not eating the right sort of food.
Nearly two-thirds of the calories we consume are from highly processed foods, many of which are low in fibre and high in fat, sugar or salt, while three-quarters of us do not eat enough fruit and vegetables.
So what can be done? The tax on sugary drinks, announced earlier this year and due to come into force in 2018, was widely welcomed. But it is seen as just a start by the health lobby, which has been buoyed by its success in convincing ministers to take the plunge on the sugar tax - for months they had been suggesting they weren't keen.
Other steps, including a more substantial restriction on advertising, an end to promotions such as buy-one-get-one-free deals and clearer labelling, are now being targeted.
Will they get their way? They certainly have the ear of government and with the obesity strategy expected to be published as soon as the EU vote is out of the way we should find out sooner rather than later.
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The IT meltdown that grounded thousands of British Airways passengers will cost the airline at least £80m, it has emerged.

Willie Walsh, chief executive of BA owner International Airlines Group, told investors its initial assessment of the gross cost "is in the order of £80m".
He promised to provide an update with more details when appropriate.
The chaos was triggered by an engineer who disconnected a power supply.
The major damage was caused by a surge when it was reconnected.
Speaking at IAG's annual meeting in Madridon Thursday, Mr Walsh apologised again for last month's chaos, describing it as a "dreadful experience".
About 75,000 passengers faced severe disruption when BA's system failed over the Bank Holiday weekend.
Mr Walsh said BA was "working hard to ensure that affected passengers are compensated as soon as possible".
He had previously announced an independent investigation "to learn from the experience".
During the outage, the GMB, a union which represents aviation workers, claimed the problems had been caused by BA making IT staff redundant and outsourcing the department last year.
Mr Walsh said on Thursday: "What we do know at this stage, however, is that this failure had absolutely nothing to do with changes to the way we resource our IT systems and services."
IAG chairman Antonio Vazquez said: "You can be reassured that we will do everything in our powers to avoid similar problems in the future and restore our customers' faith in British Airways."
BA was one of several airlines affected by a baggage system problem at Heathrow on Thursday morning.
Hundreds of passengers on flights operated by IAG-owned Iberia, as well as BA and American Airlines at terminals 3 and 5 had to fly out without their luggage.
Heathrow said the problem has now been fixed and apologised.


A woman has been arrested after a five-year-old girl fell from a first-floor window.

The girl was taken to Newcastle Royal Victoria Infirmary after falling from the building in Newbury Avenue, Gateshead, on Wednesday, police said.
She is described as being in a stable condition.
The 48-year-old woman was arrested on suspicion of assault, and bailed pending further inquiries until 19 April.


The Liberal Democrat manifesto will include a commitment to another EU referendum where the party would campaign for Remain, Nick Clegg says.

The former deputy prime minister said that once talks are complete, voters should get two choices - accept the Brexit deal or stay in the EU.
Setting out his party's Brexit position, he claimed leaving the EU would damage the UK economy by Â£59bn.
Theresa May says she is determined to make a success of Brexit.
She says a separation deal can be reached that is good for both the UK and the EU.
But Mr Clegg, who is the Lib Dems' Brexit spokesman, said voters should be able to "judge for themselves whether it is the right future for the country" once talks are complete, which is expected to be in 2019.
"That referendum will offer two choices; accept the deal, or remain in the EU. Liberal Democrats will campaign for a Remain vote," he said.
Mr Clegg said the PM had chosen to "pursue the most extreme and damaging form of Brexit", adding that the fall in the value of sterling would be sharply felt by holidaymakers travelling abroad.
Despite many gloomy pre-referendum economic forecasts having not materialised, Mr Clegg said the "long-term impacts won't start to be felt until 2019 at the earliest".
He claimed a "triple whammy of higher inflation, lower business investment and lower net migration" means that GDP is likely to be 2.4% lower in 2021 than it would have been without the EU referendum.
As a result of extra borrowing, Brexit will have "dented the public finances by Â£59bn over a five-year period", he predicted.
Mr Clegg also launched an attack on his former partners in government, saying the economic damage from Brexit was "already being felt by the people who the Conservatives have always cared about least: the poor, the insecure and the vulnerable", and that Mrs May had "specious excuses" for calling next month's general election.
A Conservative spokesman said: "Every vote for Theresa May gives her a better hand in Brexit negotiations, helping to get a deal which strengthens our economy and helps UK consumers."


An independent theatre producer who fraudulently claimed £65,000 in grants has been jailed for 18 months at Cardiff Crown Court.

Michael Salmon, 30, used his position as freelance producer of a show, "Cosy", at Cardiff's Millennium Centre, to obtain grants.
Some grants came from the Arts Council of Wales and Arts Unlimited, set up to fund projects with disabled performers.
Salmon, from Grangetown, Cardiff, admitted five counts of fraud.
The court heard that he used £9,000 to fund his own lifestyle, mainly on trips to London.
But most of the money he defrauded was lost by his own mismanagement of several theatrical projects.
One grant of £30,000 was obtained by falsifying a bank statement.
The deception took place between May 2015 and February 2016.
Jailing Salmon, Judge Paul Lewis QC said he had lied to theatrical directors who had gone to him for help in raising grants for their productions.
He said: "This was public money intended for good causes which never reached them.
"There was substantial financial mismanagement with money being transferred from one project to another when it shouldn't have been."


Communal violence in the Central African Republic risks spiralling out of control, the UN Secretary General Ban Ki-moon has said.

He warned the Security Council that armed groups were inciting Christians and Muslims against each other.
Mr Ban also backed the establishment of a UN peacekeeping force before the crisis leads to widespread atrocities.
The impoverished country has been in a state of chaos since rebels seized power in March.
A rebel alliance known as Seleka ousted President Francois Bozize from office, replacing him with the alliance's commander, Michel Djotodia.
Mr Djotodia has since formally disbanded the rebels and integrated many fighters into the national army.
But former rebels linked to Seleka have continued to launch attacks on scores of villages, prompting the emergence of local civilian protection groups.
In a report to the Security Council, Mr Ban said violence in the CAR "threatens to degenerate into a countrywide religious and ethnic divide, with the potential to spiral into an uncontrollable situation".
Armed gangs, mainly former Seleka rebels, who are mostly Muslim, now control most of the landlocked country.
Mr Ban said escalating rebel attacks and retaliation by Christian militia groups "have created a deep suspicion between Christians and Muslims in some areas of the country".
In December, the African Union is due to take charge of the regional peacekeeping force of 2,500 troops currently in the country.
But Mr Ban said he supported the eventual establishment of a UN peacekeeping mission with as many as 9,000 troops as long as conditions allowed.
He also urged Security Council members to impose sanctions against perpetrators of mass rapes and killings allegedly already committed in the CAR.
The Christian majority and Muslim minority always lived in harmony until March 2013 when Mr Djotodia seized power after his forces overran the capital, Bangui.
Mr Djotodia became the first Muslim to rule CAR, installing himself as interim president and forming a transitional government that he says will organise democratic elections.
The government denies targeting any group, but recognises the rise in inter-community violence.


Former Motherwell defender Stephen Craigan believes it is time to give summer football a chance in Scotland.

Rangers and St Johnstone were knocked out of the Europa League in the first qualifying round, and Craigan reckons an earlier start to the season would make a difference.
"It's a no-brainer - starting early would allow our teams to be up to speed when these games come along," he said.
"Let's try something different and see if it can make us any better."
St Johnstone's Europa League bid was ended by Lithuanian side FK Trakai, who are already well into their domestic season.
But Rangers' conquerors, Progres Niederkorn of Luxembourg, last played competitively in May before they took on the Ibrox side.
Such defeats are, of course, all too common for Scottish sides and former Northern Ireland defender Craigan says a calendar change is well worth a try.
"We have tried changing the size of the league, we have tried adding play-offs to the league, we have tried adding the split between the top and bottom six, we have tried the Betfred Cup with earlier games at the start of the season," the Well coach added.
"The only thing we haven't done is change the time the season starts. If the worst-case scenario happened and it didn't work, then we can just change back.
"There should be nothing holding us back from giving it a try. People mention World Cups and Euros, but Scotland are not qualifying for those tournaments right now so we're bound to be able to work round it for two or three weeks every couple of years.
"I've also heard people say it would affect the credibility of the league. But it's performances in Europe that make a league credible.
"The changes we have made in the past are tinkering slightly. But something has to change because every year the same thing happens. Sooner or later someone has to say enough is enough."


Four people have died in a plane crash at a car auction site in Hampshire.

The Saudi-registered private jet - which was arriving from Italy - crashed during an attempt to land at Blackbushe Airport in Yateley.
Its pilot and all three passengers were killed but no-one on the ground was injured, Hampshire Constabulary said.
An eyewitness said the Phenom 300 jet exploded on impact at the British Car Auctions site, which is based at the airfield.
In a statement, Blackbushe Airport said the jet crashed near the end of the runway while attempting to make a landing.
The Saudi General Authority of Civil Aviation tweeted it was a Saudi-registered private aircraft and that it would support the Air Accidents Investigation Branch (AAIB) in its investigation.
A spokeswoman for Milan Malpensa Airport confirmed the plane had left at 13:30 BST on its way to Hampshire.
Andrew Thomas, who was paying for a car at the time, saw the plane catch fire on impact.
"I saw it when it had just happened, and could see the plane and cars in flames," he said.
"The plane nosedived into the cars and exploded on impact."
British Car Auctions, based in Farnham, Surrey, operates an auction site and warehouse at the Hampshire airfield.
Barry Wright was at the warehouse when the crash happened. He said the plane "went up in a ball of flames in about 60 seconds".
He added: "It sounded like a missile coming in - very loud, followed by several explosions."
He said everyone was evacuated from the area and people were shouting "get out".
Robert Belcher said he saw a "a big column of smoke" as he was passing the airport on his way home
He said: "I could see the plume of smoke waving from about five miles away and was hoping it was just a car fire rather than an aircraft accident.
"Apparently the aircraft was landing and just didn't stop.
"At the end of the runway there is a car park, because the airport is used for car auctions, and it has gone into there."
Hampshire police said officers were called to the scene at 15:09 BST.
The A30 was closed both ways between A327 Cricket Hill Lane and Blackbushes Road, but has since reopened.
However, the airport access road is closed from the A30 junction. Police have warned people to avoid the area.
Acting Ch Insp Olga Venner said Hampshire police were carrying out a joint investigation with the AAIB.
She urged people with pictures and videos to get in touch on 101.


More than 200,000 people have been killed or have disappeared since Mexico's government declared war on organised crime in December 2006.

The military offensive has led to the destruction of some drug gangs, splits within others and the emergence of new groups.
With widespread corruption and impunity exacerbating Mexico's problems, there is no end in sight to the violence.
Which are the most powerful cartels today? And who is behind them?
Founded in the late 1980s, the Sinaloa cartel headed by Joaquín "El Chapo" Guzmán has long been considered Mexico's most powerful criminal organisation.
Having outfought several rival groups, the Sinaloa cartel dominates much of north-west Mexico and makes billions of dollars from trafficking illicit narcotics to the United States, Europe and Asia.
However, the cartel's future is uncertain after Guzmán was recaptured in 2016 following two daring prison breaks. He was extradited to the US in January and now awaits trial in New York.
Sinaloa's strongest competitor is its former armed wing, the Jalisco New Generation cartel. Formed around 2010, the Jalisco cartel has expanded rapidly and aggressively across Mexico and is now challenging Sinaloa for control of strategic areas, including Tijuana and the port of Manzanillo.
The Jalisco cartel is blamed for a series of attacks on security forces and public officials, including downing an army helicopter with a rocket-propelled grenade in 2015. Mexico's Attorney General Raul Cervantes recently declared it the nation's largest criminal organisation.
Guzmán's latest arrest created a split within the Sinaloa cartel, fuelling rising violence in the region.
On one side are Guzmán's sons, Ivan Archivaldo and Jesus Alfredo. On the other side, his former associate Dámaso López Núñez, alias "El Licenciado", and his son Dámaso López Serrano.
Guzmán's son were kidnapped at a restaurant in Puerto Vallarta last year but released days later. López Senior was among the suspected culprits. Guzmán's sons also accused him of leading them into a near-fatal ambush in February.
López Senior was arrested in Mexico City in May. The cartel leadership remains under dispute.
Guzmán's older brother Aureliano is another influential figure vying for control, while Fausto Isidro Meza Flores, alias "Chapo Isidro", has emerged as one of the cartel's powerful local adversaries.
Ismael "El Mayo" Zambada, an elusive veteran who ran the Sinaloa cartel alongside Guzmán, is one of the Mexican government's primary objectives.
Aged 69, Zambada is nearing retirement but is said to retain strong influence behind the scenes. Mexico offers a 30 million peso (£1.2m) reward for information leading to his capture.
Ruben Oseguera, alias "El Mencho", the head of the Jalisco New Generation cartel, is another of Mexico's most wanted kingpins. A former police officer and avocado vendor, he is the subject of a two million peso (£82,000) bounty.
Rafael Caro Quintero, the founder of the now-defunct Guadalajara cartel, is the DEA's most wanted fugitive. Convicted of the abduction, torture and murder of DEA agent Enrique Camarena in 1985, he served 28 years of a 40-year sentence in Mexico before being released after a court ruled he should have been tried in a state rather than a federal court.
The US state department offers rewards of up to $5m (£3.8m) for information on Caro Quintero, Zambada or Oseguera.
In eastern Mexico, the Gulf cartel and their fearsome former allies Los Zetas have been weakened by killings and arrests of top leaders, leading to splits within both groups.
In western Michoacán state, the pseudo-religious Knights Templar and La Familia cartels have been largely vanquished by vigilante groups, although the region remains contested by their remnants and several newer gangs.
To the north, the once mighty Juárez, Tijuana and Beltrán-Leyva cartels have all been weakened by Sinaloa cartel offensives.
Mexico's criminal landscape has grown more fragmented since then-President Felipe Calderón sent the army to combat the cartels in December 2006.
The government succeeded in capturing or killing the leaders of the biggest cartels, but this led to many smaller and often more violent gangs springing up in their place.
Without the capacity for transnational drug trafficking, these gangs deal in kidnapping, extortion, human trafficking, illegal logging and mining, and stealing oil from government pipelines.
The level of violence dropped after the election of President Enrique Peña Nieto in 2012, but it has shot up dramatically in the last two years, with 2017 on course to be the worst year on record.
Activists and journalists are routinely murdered, while corruption and impunity remain rampant.
The legalisation of marijuana in parts of the US has driven Mexico's cartels to push harder drugs like methamphetamine, heroin, and fentanyl, a powerful synthetic opioid. This has fuelled an epidemic north of the border, with over 33,000 Americans dying from opioid-related overdoses in 2015, according to the US Centers for Disease Control and Prevention.
Mexico's cartels are notorious for their extreme violence. Beheadings and torture have become commonplace over the past decade.
Victims are sometimes hung from bridges or dissolved in barrels of acid. Some cartels post graphic execution videos on social media to intimidate their enemies.
Mexico registered 188,567 murders from December 2006 until May 2017, according to government records.
With 2,186 murders, May was the most violent month since records began in 1997.
More than 30,000 people are classified as disappeared.