Tony Abbott, who was Australia's prime minister when the Malaysia Airlines MH370 tragedy took place, revealed shocking information in a documentary entitled "MH370: The Untold Story". br br He said "highest levels" of the Malaysian government believed from "very early on" that the MH370 tragedy was a murder-suicide plot.br br Abbott said it was made "crystal clear" to him within a week that the aircraft was almost certainly deliberately downed by the pilot.