Malaysia Airlines says it has lost contact with a plane carrying 227 passengers and 12 crew on route from Kuala Lumpur to Beijing.
The airline says that Flight MH370 has lost contact with Subang air traffic control at 2:40 a.m. Saturday.
The flight is operated on the Boeing 777-200 aircraft. It departed Kuala Lumpur at 12: 41 a.m. Saturday and was expected to land in Beijing at 6: 30 a.m. the same day.
China's state media says Vietnamese authorities have detected signals from the missing Malaysia Airlines plane.
The Xinhua News Agency, citing a local Vietnamese media report, says a Vietnamese search and rescue official reported that the signals have been detected from the plane from about 220 kilometers (120 miles) southwest of Vietnam's southernmost coastal province of Ca Mau.
The flight was carrying a total number of 227 passengers, including two infants, and 12 crew members.