Crew aboard the Australian Navy ship HMAS Success look over to the Royal Malaysian Navy ship KD LEKIU during a Replenishment at Sea evolution in the southern Indian Ocean
Media playback is unsupported on your device

Plane search has 'best lead so far'

7 April 2014 Last updated at 05:55 BST

An Australian vessel searching for the missing Malaysia Airlines plane has detected signals consistent with those from aircraft black boxes.

Australian defence vessel Ocean Shield acquired the signal twice, once for more than two hours, Australia said.

Air Chief Marshal Angus Houston, who is leading the search, called it the "most promising lead" so far.