Ten planes and nine ships are continuing the search for missing Malaysian Airlines plane MH370, as Malaysian authorities warn the reasons for the aircraft’s disappearance may never be fully understood.

Malaysian prime minister Najib Razak is today heading to Australia for talks on the search as the search enters its 25th day.

He will arrive in Perth, western Australia, on Wednesday evening before visiting the new Joint Agency Coordination Centre, where the southern Indian Ocean search is being led.

There he will meet Australian prime minister Tony Abbott, and retired air chief marshal Angus Houston, who is leading the JACC.

Flight MH370 disappeared on March 8th as it was travelling from Kuala Lumpur to Beijing.

It was carrying 239 people.

HMS Tireless, a UK submarine, has also arrived in the southern Indian Ocean to join the search and will soon be joined by Royal Navy ship HMS Echo.

Several floating objects have been found in recent days, but none is believed to belong to the missing plane.