Vietnamese search and rescue operations have not picked up any signal from missing Malaysia Airlines flight MH370, a Vietnamese rescue official has said.
"We have been seeking but no signal from the plane yet," Pham Hien, director of a Vietnam maritime search and rescue coordination centre in Vung Tau, told Reuters.
Vietnamese and Chinese media had reported that a signal from the plane had been picked up. The reports did not identify what kind of signal.
"The information on local media about the signal near the Cape Ca Mau was inaccurate," Pham said.
A mother has described her frustration as she waits for answers on the fate of her missing son who is on board the missing Malaysia plane.
Malaysia's military believes a jetliner missing for almost four days turned and flew hundreds of kilometres to the west.
The wife of a passenger travelling on the missing Malaysia Airlines flight has spoken of her struggle to cope as she waits for news.