Via BBC:
Smoke was detected inside the cabin of the EgyptAir passenger plane before it crashed in the Mediterranean on Thursday, investigators have confirmed.
Smoke detectors went off in the toilet and the aircraft’s electrics, minutes before the signal was lost, the Aviation Herald had earlier reported.
A spokesman for French investigators said it was too early to say what caused the crash.
Flight MS804 was en route from Paris to Cairo with 66 people on board.