French president François Hollande has confirmed that the plane crashed in a TV press conference and offered help with search for debris, Censor.NET informs citing The Guardian.
According to him, "no hypothesis" could be ruled out on the causes of the crash.
A source from Greece aviation also informed AFP agency that the plane crashed in 200 km from the Greek island of Karpathos. This has not been confirmed officially yet. but representatives of Egypt civil aviation also believe the plane crashed into the sea.
Head of Greece's air traffic controllers board Serafeim Petrou in his interview with The Guardian insisted there was "no chance" MS804 was still in the air.
"An explosion could be a possibility but, then, so could damage to the fuselage," he said.
The EgyptAir Airbus A320 carrying 66 passengers and crew on a flight from Paris to Cairo disappeared from radar over the Mediterranean Sea Thursday morning.