First images of EgyptAir debris released
The Egyptian military has released images of items found during the search in the Mediterranean Sea for missing Egypt Air flight MS804.
They include life vests, parts of seats and objects clearly marked EgyptAir.
The plane was en route from Paris to Cairo with 66 people on board when it vanished from radar early on Thursday.
Investigators have confirmed smoke was detected in various parts of the cabin three minutes before it disappeared, but say the cause is still not known.
Speaking on Saturday, French Foreign Minister Jean-Marc Ayrault said "all theories are being examined and none is favoured."
Images posted on the Facebook page of the spokesman for the Egyptian Armed Forces showed life vests and other items with the EgyptAir logo.
The search has also reportedly found body parts and luggage.
The main body of the plane and the two "black boxes" which show fight data and cockpit transmissions have not yet been located.
The Aviation Herald said that smoke detectors had gone off in the toilet and the aircraft's electronics before the signal was lost
It said it had received flight data filed through the Aircraft Communications Addressing and Reporting System (ACARS) from three independent channels.
It said the system showed that at 02:26 local time on Thursday (00:26 GMT) smoke was detected in the Airbus A320 toilet.
A minute later - at 00:27 GMT - there was an avionics smoke alert.
The last ACARS message was at 00:29 GMT, the air industry website said, and the contact with the plane was lost four minutes later at 02;33 local time.
ACARS is used to routinely download flight data to the airline operating the aircraft.
Confirming the data, France's Bureau of Investigations and Analysis told AFP it was "far too soon to interpret and understand the cause of the accident as long as we have not found the wreckage or the flight data recorders".
Agency spokesman Sebastien Barthe told Associated Press the messages "generally mean the start of a fire" but added: "We are drawing no conclusions from this. Everything else is pure conjecture."
Philip Baum, the editor of Aviation Security International Magazine, told the BBC that technical failure could not be ruled out.
"There was smoke reported in the aircraft lavatory, then smoke in the avionics bay, and over a period of three minutes the aircraft's systems shut down, so you know, that's starting to indicate that it probably wasn't a hijack, it probably wasn't a struggle in the cockpit, it's more likely a fire on board."
Security consultant Sally Leivesley said the timing on the data suggested an "extremely rapidly developing flame front from a fire that has overwhelmed the avionics very, very quickly".
She cited the case of "underpants bomber" Umar Farouk Abdulmutallab, who tried to set off an explosive device hidden in his underwear on a Detroit-bound flight in 2009.
Although the attempt failed, a fire from the device's chemicals still spread "right up the side of the plane".
Greece says radar shows the Airbus A320 making two sharp turns and dropping more than 25,000ft (7,620m) before plunging into the sea.
The search is now focused on finding the plane's flight recorders, in waters between 2,500 and 3,000 metres deep.
What do we know about what happened?
The BBC has learned the plane that disappeared was forced to make an emergency landing in 2013 after the pilot noticed the engine overheating, but an official report said the defect had been repaired.
In October, an Airbus A321 operated by Russia's Metrojet blew up over Egypt's Sinai Peninsula, with all 224 people on board killed.
Sinai Province, a local affiliate of the Islamic State jihadist group, said it had smuggled a bomb on board.
Who were the victims?
The names of some of those who were on board have emerged, but most have not been identified publicly.
Those on board included:
Richard Osman, a 40-year-old geologist and father-of-two from South Wales;
Canadian national Marwa Hamdy, a mother-of-three and an executive with IBM originally from Saskatchewan, but who had relocated to Cairo;
Pascal Hess, a photographer from Normandy, France, who had lost his passport last week - only for it to be found in the street, allowing him to catch the flight;
An unnamed couple in their 40s from Angers in north-west France, as well as their two children;
Ahmed Helal, the Egyptian-born manager of a Procter and Gamble plant in Amiens, northern France
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