Submarine search for MH370 at half-way stage

A robotic submarine looking for the missing Malaysia Airlines plane continued to dive, after completing about half of its search on the bottom of the Indian Ocean with no luck. The Bluefin 21 unmanned sub began its eighth dive off the coast of western Australia.

Its search area forms a 6.2-mile circle around the location of an underwater signal that was believed to have come from the aircraft's black boxes before their batteries died.

The sonar scan of the seabed in that area is expected to be completed in five to seven days, the search centre said.

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Search for missing flight MH370 'entering a new phase'

Australian Prime Minister Tony Abbott has said the search for missing flight MH370 is now "entering a new phase". He said the effort would now be "focussed on searching the ocean floor" over a "much larger area" than is currently being covered.