Australia "won't rest" until missing Malaysian Airlines flight MH370 has been located, Prime Minister Tony Abbott said Sunday of the rescue operations in the Indian Ocean, which are being coordinated from Perth, Reuters reported. Abbott named former military chief Air Chief Marshal Angus Houston to head a new joint agency in Perth to coordinate the search, which is currently focused on an area 1,850 kilometres west of the continent. Malaysia will continue to hold primary responsibility for the recovery operation and the investigation into why the plane with 239 passengers and crew on board made a radical change of course toward the Indian Ocean while flying from Kuala Lumpur to Beijing, on March 8.