HANOI, March 8 -- A Vietnamese rescue official denied that the signal of the missing Malaysian plane has been detected.

Pham Hien, director of the Vietnam's maritime search and rescue coordination center zone 3, told Xinhua Saturday that the information that the signal of the plane has been detected at some 120 nautical miles southwest of Vietnam's southernmost Ca Mau province is incorrect.

"We have no such equipment for positioning," Hien told Xinhua.