MH370 Acting Transport Minister Hishammuddin Hussein has refused to address whether Malaysia had handled the initial stages of Malaysia Airlines Flight MH370's loss poorly and instead told critics to "move forward".

"I think you are looking so far back at a time when we are already looking forward and have narrowed it down to a very specific phase of the search and recovery.

"This is very unfortunate, where we are still speculating on matters which are not looking forward," Hishammuddin told a press conference when asked if Malaysia had shared military information with aviation authorities in the first few chaotic hours after the Beoing 777 went missing.

Hishammuddin drew parallels to Australia's handling of the situation, saying that the country had been transparent but the mystery of Flight MH370 remains unsolved.

"(Joint Agency Coordination Centre chief) Angus Houston has been very transparent in what he has been doing (but) at the same time, we have not got any answers yet," he said.

He added that the nature of the incident made it hard to put the blame on Malaysia.

Too soon to apportion blame on Malaysia

"What is important now is for everybody to look forward, and we are moving to the next phase of this search and it is unprecedented.

"If you have to apportion blame on Malaysia, how do you do that when we, (even) the world, have never faced something like this before?" he said.

Hishammuddin, who is also defence minister, said any review of the conduct of the investigation would only come after the international investigation team and similar bodies were set up.

He added that Malaysia was already in the process of setting up the investigation team and the matter will be tabled in the cabinet in "a few days".

On a related matter, Hishammuddin said the technical committee, led by Deputy Transport Minister Abdul Aziz Kaprawi was looking at details for the deployment of more autonomous undersea vehicles (AUV).

"The committee will look at the technical aspect and relay it to the deployment of assets committee on what more assets can be deployed for this new phase of the search," he said.

Yesterday, the AUV Bluefin-21 ( above ) was deployed for the first time from Australia Defence Vessel Ocean Shield in the south Indian Ocean to conduct an undersea search.

However, it resurfaced 10 hours short of its intended 16-hour mission to scour the sea floor once it reached its 4.5-kilometre depth limit.

Prior to this, Ocean Shield had been using a towed pinger locator to "listen" for the black box transmissions but this ceased yesterday.

The black box only has a certified battery life of 30 days, but it could last longer at times.