An An Egypt Air flight from Paris to Cairo with 69 people on board has vanished from radar, the airline said on its verified Twitter feed on Thursday.
A tweet on the airline's official account said flight MS804 left Paris at 23:09 p.m. local time (0239 IST), "heading to Cairo (and) has disappeared from radar".
Further tweets in Arabic said contact was lost at 02:45 Cairo time, when the plane was just inside Egyptian airspace and at an altitude of 37,000 feet (11,000 metres).
There were 59 passengers and 10 crew members aboard, according to the airline.
"EgyptAir has contacted the concerned authorities and bodies and inspection is underway through the rescue teams," another tweet in English said.
An Egypt Air flight from Alexandria to Cairo was hijacked in March and forced to divert to Cyprus, where the "unstable" hijacker demanded to see his ex-wife.
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He surrendered after a six-hour airport standoff, which ended peacefully.
More details are awaited.
An informed source at EGYPTAIR stated that Flight no MS804,which departed Paris at 23:09 (CEST),heading to Cairo has disappeared from radar.
— EGYPTAIR (@EGYPTAIR) May 19, 2016