Two men armed with knives have hijacked a Russian passenger plane shortly after take-off from Istanbul's airport.
Turkey's Transport Minister, Enis Oksuz, said one of the crew members was injured as the attackers, reported to be Chechen, seized the aircraft.
He said radio contact with the plane, which is carrying 162 passengers, had been lost.
Mr Oksuz said the plane was apparently on its way to Syria.
The plane, which is operated by Vnukovo Airlines, was on a scheduled flight to Moscow.
It took off at 1330GMT (1130GMT) and the hijackers seized control some 30 minutes later.
This is the fifth hijacking from a Turkish airport since 1998.