The preliminary report was released by the Aviation and Railway Accident Investigation Board on Monday in South Korea.

By Jack Kim and Lisa Barrington SEOUL (Reuters) -Both engines of the Jeju Air plane that crashed last month contained duck remains, according to a preliminary report on Monday, with authorities still trying to determine what caused the deadliest air disaster on South Korean soil.

South Korean officials are launching an investigation into the cause of the fire that engulfed an Air Busan passenger plane, with eyewitness accounts suggesting a power bank may have sparked the blaze.

SEOUL: Investigators have found evidence of a bird strike in the crash of a Jeju Air passenger plane in South Korea in December, which resulted in 179 fatalities.Feathers and blood stains discover

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Following the deadly Jeju Air accident, the government ordered low cost carriers to reduce flight times, boost pilot training and expand maintenance crews.

The black boxes of a plane that crashed in South Korea last month failed to record the final four minutes of the flight before the crash that killed 179 people on board, officials said in a preliminary report.