Malaysian Prime Minister vowed no rest on Thursday until the fate of flight MH370 is known, as Australia described search operation for the missing plane the “more difficult in the human history”.

Malaysian Prime Minister vowed no rest on Thursday until the fate of flight MH370 is known, as Australia described search operation for the missing plane the “more difficult in the human history”.

"We want to find answers. We want to provide comfort to the families and we will not rest until answers are indeed found," PM Najib Razak said, as he toured the military base in Perth being used as a staging post in the hunt for the Malaysia Airlines plane.

Najib admitted the exhaustive hunt for the plane was a "gargantuan task", but said he was confident that "in due time we will provide a closure to this event, on this tragedy".
He also thanked those involved in the eight-nation search.

The Boeing 777 vanished on March 8 with 239 people on board.

Despite extensive scouring of the remote southern Indian Ocean, no debris that would indicate a crash site has been found, with time running out to locate the plane's "black box" which only emits a signal for around 30 days.

Meanwhile, Australian Prime Minister Tony Abbott said the current search was the toughest ever, despite Canberra’s experience of rescue operations.

"Every day, working on the basis of just small pieces of information, we are putting the jigsaw together. And every day we have a higher degree of confidence that we know more about what happened to this ill-fated flight," he said.

"It is a very difficult search, the most difficult in human history, but as far as Australia is concerned we are throwing everything we have at it."