Sunday, 16 March 2014 - 18:11
Missing jet sought in huge Asia arc
Malaysian officials say Some 25 countries are now involved in a vast search operation for the missing airliner that disappeared over a week ago.
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The search area - from central Asia to the southern Indian Ocean - takes in vast tracts of land and sea.
Malaysia's transport minister says an already complex search operation has become even more difficult.
Crew, passengers and ground staff are being investigated after it was confirmed the jet was commandeered.
Investigators are trying to obtain the radar data from any of the countries that Malaysia Airlines flight MH370 may have passed over, with its 239 crew and passengers.
Malaysian officials are contacting countries including Kazakhstan, Uzbekistan, Kyrgyzstan, Turkmenistan, Pakistan, Bangladesh, India, China, Myanmar, Laos, Vietnam, Thailand, Indonesia, Australia and France.
They are also asking countries to provide assistance in the search for the plane, including satellite data and analysis, ground-search capabilities, and maritime and air assets.