Egypt Air release list of nationalities of passengers on crashed flight #MS804

List of passengers' nationalities on the crashed Egyptair with flight number #MS804. 56 passengers were on board.

Meanwhile, a top airline expert believes the disappearance of Egyptair flight MS804 was ‘almost certainly’ caused by ‘an attack’. And other aviation and security experts have suggested it may have been caused by an explosive device.

One British passenger is known to have been among 66 people on board the missing plane that 'vanished' in the early hours after heading into Egyptian airspace.

Jean-Paul Troadec, the former chief of France’s air accident investigation unit, is one of the most respected names in aviation and he said the lack of live emergency alert suggested a ‘brutal event’.

He told Europe 1 radio station in Paris: "A technical problem, a fire or a failed motor do not cause an instant accident, and the team has time to react.

"The team said nothing, they did not react, so it was very probably a brutal event and we can certainly think about an attack."

There have been conflicting reports about whether the plane sent an emergency distress signal.

Air travel expert Julian Bray said no alert being made could mean the airliner suffered a "catastrophic failure" possibly as a result of an explosion.

He said: "It has to be a catastrophic failure because everything went dead and they wouldn't have had time to get a message out.

"It's gone into the deepest part of the Mediterranean."