The conclusion of fresh satellite data is that missing Malaysia Airlines Flight 370 crashed into the sea - far from any landing site. 

Malaysian Prime Minister, Najib Razak, said that the data pointed to the fact that the jet had gone down in the middle of the southern Indian Ocean.

Speaking at a press conference in Kuala Lumpir, he added that said fresh analysis by the UK Air Accidents Investigation Branch and tracking firm Inmarsat revealed that MH370's last position was in the ocean west of Perth, Australia.

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''This is a remote location, far from any possible landing sites,'' he said. ''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.''

He added that Malaysia Airlines had already spoken to the families of the passengers and crew to inform them of the latest development.

''For them the past few weeks have been heart-breaking. I know this news must be harder still,'' he said.

Mr Razak said British firm Inmarsat had employed ''a type of analysis never before used in an investigation of this sort''.

The new data revealed that MH370 flew along the southern corridor where investigators had said the plane could have travelled along, based on pings sent several hours after it disappeared on March 8.

Investigators had drawn up two huge search areas in two large arcs - a northern corridor stretching from Malaysia to Central Asia and a southern corridor extending down towards Antartica.

Flight 370 went missing on March 8 enroute from Kualar Lumpur to Beijing, China, sparking an international hunt for any clues as to its whereabouts.

Police have considered hijacking, sabotage, terrorism or issues related to the mental health of the pilots or anyone else on board as possible lines of inquiries.