PUTRAJAYA, Malaysia, July 30 (Xinhua) -- A detailed report on the disappearance of Malaysia Airlines flight MH370 in 2014 released by a safety investigation team Monday failed to determine the cause behind the mishap and left many questions unanswered due to lack of evidence.

The 800-plus-page report, while reviewing several aspects ranging from airworthiness and maintenance to cargo assignment and wreckage information, said the probe team could not determine why the plane went off its filed flight route.

"The change in flight path likely resulted from manual inputs," it added.