An EgyptAir flight which disappeared from radar screens en route from Paris to Cairo early Thursday, crashed into the sea off the southern Greek island of Karpathos while in Egyptian airspace, a Greece aviation source told AFP.

"At around 0029 GMT (3:29 am) when it was in Egyptian airspace, the plane disappeared from Greek radars... it crashed around 130 nautical miles off the island of Karpathos," the source told AFP.