Flight data indicates a China Eastern Airlines plane that crashed in March was intentionally put into a nose-dive.
Investigators have so far not found any mechanical or technical faults with the jet, the reports say, citing a preliminary assessment by US officials.
The Boeing 737-800 was flying between the southern Chinese cities of Kunming and Guangzhou when it crashed.
All 132 passengers and crew on board the plane died in the crash.
The report said Data from one of the plane’s “black box” flight recorders, which was recovered from the crash site, suggested that inputs to the controls pushed the plane into a near-vertical dive.
Also read ; Black box found in China Eastern Plane crash
Editing by Omotola Oguneye