The first report on last month’s Jeju Air crash in South Korea has confirmed traces of bird strikes in the plane’s engines, though officials haven’t determined the cause of the accident that killed all but two of the 181 people on board.

Air crash investigators found evidence of a bird strike on a commercial jet that crashed in South Korea, killing 179 people on board. A preliminary report released by authorities Monday stated that both engines on the Jeju Air Boeing 737-800 jet contained duck DNA,

According to a report by Reuters, which cited sources familiar with the matter, said that investigators from the South Korean Aviation and Railway Accident Investigation Board (항공·철도사고조사위원회, ARAIB) found bird feathers and blood in both engines of the Boeing 737-800 that crashed at Muan International Airport (MWX).

A preliminary report says evidence of a bird strike was found on the Jeju Air plane that crashed into a wall at a South Korean airport, killing 179 people.

The exact cause of the Jeju Air crash remains unclear, and the investigation is complicated because the black boxes stopped recording four minutes before impact.

Investigators confirmed several details in the preliminary report on the Jeju Air crash in South Korea that killed 179 people. The investigation, and controversy surrounding the crash, continue.

Authorities have suggested that migratory bird strikes were the cause of last month's deadly plane crash in South Korea, according to multiple reports.

Investigators found bird blood and feathers in both engines of the Jeju Air Boeing 737 that crashed in Seoul, killing 179 people.

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.

Duck remains were found in both engines of the Jeju passenger jet that crashed last month, killing 179 people in the worst air disaster in South Korea’s history.