The Malaysian Airlines aircraft that 'disappeared' en route from Kuala Lumpur to Beijing, is "still missing" and has not landed, spokesman for the company told CNN.
Fuad Sharuji, Vice President of Operations for Malaysia Airlines, said that there had been no distress call or no indication that the aircraft was in difficulty.
Aircraft manufacturer Boeing - the US company that make the 777-200 aircraft - have tweeted their concern over the incident.
We’re closely monitoring reports on Malaysia flight MH370. Our thoughts are with everyone on board.
According to China's Xinhua News Agency, the plane lost communication over Vietnam with the control department in the Ho Chi Minh area at 1.20am local time and that radar contact also was lost.
The plane was carrying 227 passengers, including two infants, and 12 crew members.