China: Vietnam detects signal from missing Malaysia Airlines plane
The plane lost communication two hours into the flight in Vietnam's airspace at 1:20 a.m. (18:20 GMT Friday), China's official Xinhua News Agency said. Vietnamese website VN Express said a Vietnamese search and rescue official reported that signals from the plane were detected about 120 nautical miles (140 miles; 225 kilometers) southwest of Vietnam's southernmost Ca Mau province. Vietnam detects signal from missing Malaysia Airlines plane; Jet vanishes en route to China | abc7chicago.com
Lot of stuff out there about this. Reliability may be questionable.