How did the plane change direction?published at 15:54 British Summer Time 19 May 2016
Based on what Greek authorities have said, this is how it appears flight MS804 changed direction in the moments before it disappeared.
Debris and passengers' personal belongings found 295km (185 miles) north of Alexandria
Items found by search teams include a body part, luggage and seats
Egyptian authorities have said terror is the most likely cause, but there is no evidence yet to back up claim
No group has claimed responsibility for the crash, says the BBC's jihadist monitoring team
Radar suggests plane made two sharp turns, plunged 27,000 ft, then span 360 degrees
Search for wreckage and black boxes continues, led by Egypt with assistance from France, UK, US
66 people on board included 30 Egyptians, 15 French people, two Canadians and people of 10 other nationalities including one Briton
All times in BST (GMT+1)
Nalina Eggert, Joel Gunter and Alex Therrien
Based on what Greek authorities have said, this is how it appears flight MS804 changed direction in the moments before it disappeared.
Our reporter Jonathan Blake is in Paris’s Charles de Gaulle airport answering your questions on missing EgyptAir flight MS804 now. You can join the conversation here, external.
A ship captain who had earlier posted on his Facebook page that he was involved in the search for debris has now posted images of what he says is a lifejacket in the sea.
Tarek Wahba is an employee of the Maersk shipping company from Alexandria. He said a lifejacket and part of an airplane chair were found, but it is not clear where.
A spokesman for Chad's embassy in France, Muhammed Allamine, confirmed a Chadian citizen had been on board, but did not name him.
"He just lost his mother actually," Mr Allamine said. "He was going to Chad to mourn his mother. He [was] going to give condolences to his family."
Mr Allamine added that the man had been a student at France's leading military academy in Saint Cyr.
In the week before crashing, the plane had flown to Asmara, the capital of Eritrea, as well as Brussels, Beirut, Istanbul, Abu Dhabi, Kuwait City, Athens, Luxor, Alexandria and Casablanca.
Kuwait's Foreign Ministry has named the Kuwaiti who was among 56 passengers and 10 crew on board missing EgyptAir flight MS804.
A ministry statement carried on Thursday afternoon by the state-run Kuwait News Agency, external named the missing passenger as Abdulmohsen al-Muteiri, but offered no further details.
The statement quoted Sami al-Hamad, an assistant foreign minister for consular affairs, as saying Kuwait had been in touch with Egyptian authorities over the crash.
There's plenty more information on the BBC News website about the flight MS804 crash. Read more on these by clicking below.
Greek ERT TV reports that wreckage has been found 230 nautical miles (426km) off the island of Crete.
Quote MessageMy thoughts are with the family and friends of all those missing following the disappearance of EgyptAir's flight MS804. We are in close contact with Egyptian and French authorities and have offered the Egyptian authorities our support in their search and rescue efforts. We know that one British passport holder boarded the flight in Paris and our staff are providing support and assistance to the family at this difficult time. We will continue to help in any way we can.
Philip Hammond, UK Foreign Secretary
British pilot Alan Carter says he flew through the same airspace as MS804 at almost the same time in the early hours of Thursday. He says:
Quote Message“The weather was perfect. I was captain of my Boeing 747 from Milan to Jeddah, flying on the same route. We were flying at 39,000 ft, EgyptAir at 37,000 ft. All air traffic communication systems were operating normally. It was a quiet time - I spoke to Athens radar and remarked how quiet it was, and was told there were only five aircraft in the airspace. Communications with Cairo radar were all normal too.”
Below is an image given to the BBC by Oxford University's physics department, who had access to Nasa satellite images showing the Mediterranean at the time the plane disappeared.
It shows clear skies, and no sign of smoke.
Nigel Thompson, the travel editor of the UK's Daily Mirror newspaper, writes that this will spell the end of a once-thriving tourist industry in Egypt.
He says the tourism industry is vital to Egypt's economy - in a country with a rich ancient history and many of the monuments and pyramids built in the time of the pharaohs still there to be admired, it once employed up to 12% of working Egyptians.
But after the 2011 revolution it took a dive. Mr Thompson says the MS804's disappearance shows the country "is not safe", external for foreign tourists, and "there's no way" he personally will be going there any time soon.
On top of the report by Reuters that two plastic objects had been found 50 miles (80km) south of where the plane disappeared, there are more reports coming in.
Greek state broadcaster ERT says two "orange-coloured objects" have been found, while an unnamed Greek military official told Associated Press that orange objects were spotted 230 miles (370 km) south-south-east of Crete, but still within the Egyptian air traffic control area.
"There have been finds south-east of Crete, inside the Cairo flight information area," Greek army general staff spokesman Vassilis Beletsiotis told Agence France-Presse.
Quote MessageLet's not try to jump to the side that is trying to identify this as a technical failure - on the contrary. The situation may point - and I say 'may' because I don't want to speculate and I don't want to go to assumptions like others - but if you analyse the situation properly, the possibility of having a different action, or having a terror attack, is higher than the possibility of having a technical [fault]."
Sherif Fathy, Egypt's civil aviation minister
For the past few hours, relatives of those on board the flight have been arriving at the airports in Paris and Cairo for news.
For more on this, you can read here.
The website MarineTraffic is monitoring the ships travelling to parts of the Mediterranean south of Karpathos:
Reuters are reporting that some debris has been found in the sea some 50 miles (80km) south of the area where the plane disappeared off the radar.
It quotes an unnamed source as saying two objects were found floating in the sea by Greek authorities.
The search effort is now focused some 240km (130 nautical miles) south of the Greek island of Karpathos
H A Hellyer, an associate fellow at Royal United Services Institute (Rusi) and non-resident fellow at the Brookings Institution, tweets:
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