The investigation into a Jeju Air crash in South Korea has found both engines on the plane sustained bird strikes but the pilots turned off a less-damaged one just before its crash-landing.

South Korean investigators have uncovered substantial evidence indicating that pilots of the Jeju Air flight that crashed in December mistakenly shut down the less-damaged engine following a bird strike,

The South Korea-led investigation into Jeju Air's fatal plane crash in December has "clear evidence" that pilots shut off the less-damaged engine after a bird strike, a source with knowledge of the probe said on Monday.