Navy divers search for missing Malaysia Airlines plane
7 April 2014 Last updated at 11:23 BST
Navy divers have been searching for parts of the missing Malaysia Airlines plane in the area where a signal was picked up.
The Ocean Shield ship picked up the signal twice, once for more than two hours, said Angus Houston, the retired air chief marshal leading the search.
He called it the "most promising lead" so far.
The plane, carrying 239 people, was flying from Kuala Lumpur to Beijing on 8 March when it disappeared.
Pictures courtesy Australian Defence Force