The disappearance of a Malaysian airliner about an hour into a flight to Beijing is an “unprecedented mystery”, the civil aviation chief said on Monday.
As a massive air and sea search now in its third day failed to find any trace of the plane or 239 people on board.
Dozens of ships and aircraft from 10 countries scoured the seas around Malaysia and south of Vietnam as questions mounted over possible security lapses and whether a bomb or hijacking attempt could have brought down the Boeing 777-200ER which took off from the Malaysian capital, Kuala Lumpur.
Hopes for a breakthrough rose briefly when Vietnam scrambled helicopters to investigate a floating yellow object it was thought could have been a life raft. But the country’s Civil Aviation Authority said on its website that the object turned out to be a “moss-covered cap of a cable reel”.
Flight MH370 disappeared from radar screens in the early hours of Saturday, about an hour into its flight from Kuala Lumpur, after climbing to a cruising altitude of 35,000 ft.
The area of the search would be widened from Tuesday, Azharuddin Abdul Rahman, the head of Malaysia’s Civil Aviation Authority, told reporters.
A senior police official told Reuters that people armed with explosives and carrying false identity papers had tried to fly out of Kuala Lumpur in the past, and that current investigations were focused on two passengers who were on the missing plane with stolen passports.