Search teams have retrieved the cockpit voice and flight data recorders from the EgyptAir plane which crashed into the Mediterranean in May, killing all 66 on board.
It is hoped analysis of the black boxes will shed light on why the plane crashed en route from Paris to Alexandria.
At present no militant group has claimed responsibility for bringing down the aircraft.
A prayer service has been held for the victims of crashed EgyptAir flight MS804.
Wreckage from the airplane as well as human remains have been found according to the Egyptian military.
There were 56 passengers on board, including two babies and a child, as well as three EgyptAir security staff and seven cabin crew.
Work has begun on analysing data from the two black boxes from the fated EgyptAir flight that crashed into the sea in May.
French air accident investigators confirm the signal detected earlier is from a flight recorder.
The head of Egypt's forensics authority said it is 'too early' to know what caused the EgyptAir plane to crash into the Mediterranean sea.