The French navy said that one of its ships has joined the search for the wreckage of EgyptAir Flight MS804 on Monday, focusing especially on the hunt for its flight recorders, as questions remain over what caused the Airbus 320 to crash over the Mediterranean, killing all 66 on board.

Five days after the plane crashed, human remains of the victims arrived at a morgue in the Egyptian capital, Cairo, where forensic experts were to carry out DNA tests, according to the head of EgyptAir, Safwat Masalam.

Security officials at the Cairo morgue said family members had arrived at the building to give DNA samples to match with the remains, which included those of a child.