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Missing plane: 'Highly unlikely' debris would be found

28 April 2014 Last updated at 06:51 BST

Australian prime minister Tony Abbott has said the search for the Malaysia Airlines plane that disappeared on a flight from Kuala Lumpur to Beijing 52 days ago is to enter a new phase.

He said it was now "highly unlikely" any debris would be found on the surface of the Indian Ocean and the underwater search would be intensified over a larger area.