New satellite data analysis has indicated that missing Malaysian Airlines Flight 370 crashed into the southern Indian Ocean, Malaysia's prime minister Najib Razak said in a news conference on Monday.

"This is a remote location, far from any possible landing sites. It is therefore with deep sadness and regret that I must inform you that, according to this new data, flight MH370 ended in the southern Indian Ocean." Razak said. "Malaysia Airlines have already spoken to the families of the passengers and crew to inform them of this development."

The new information came from the UK's Air Accident Investigation Branch, they had concluded the plane flew along the southern corridor and that its last position was in the middle of the Indian Ocean thousands of kilometres west of Perth.

The airlines sent a text message to the families before the PM's announcement.

"Malaysia Airlines deeply regrets that we have to assume beyond any reasonable doubt that MH370 has been lost and that none of those on board survived. As you will hear in the next hour from Malaysia's Prime Minister, we must now accept all evidence suggests the plane went down in the Southern Indian Ocean," the message read.

No wreckage has yet to be recovered.

Australia Prime Minister Tony Abbott informed parliament and Malaysian officials Monday that two "objects" were located by an Australian P3 Orion search plane about 15,000 miles off the coast of the Perth.

China's state news agency reported early Monday that a Chinese plane spotted two large floating objects and several white, square-shaped ones in a part of the Indian Ocean where satellite imagery has shown other potential debris.

Malaysian authorities are considering the possibilities of hijacking, sabotage, terrorism or issues related to the mental health of the pilots.