A preliminary report by Dutch investigators said Malaysia Airlines Flight MH17, which crashed in eastern Ukraine in July, was downed by a "large number of high-energy objects".
The pattern of wreckage on the ground suggested the aircraft broke into two pieces while in flight, the report said.
The cockpit voice recorder, flight data recorder, and data from air traffic control all suggest the flight proceeded as normal until it "ended abruptly" at 13:20:03 UTC.
American officials believe the plane was shot down by a surface-to-air missile fired by pro-Russian rebels.
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