French PM says 'no theory can be ruled out' on missing EgyptAir flight
France's Prime Minister Manuel Valls
France's Prime Minister Manuel Valls said Thursday "no theory can be ruled out" in the missing EgyptAir flight which disappeared en route to Cairo from Paris.
"No theory can be ruled out on the cause of this disappearance," said Valls, speaking after the plane vanished from radar over the Mediterranean with 66 people on board.
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