According to reports, the Jeju Air plane that struck a wall at a South Korean airport and killed 179 people had evidence of a bird strike.

According to a preliminary report released on Monday, January 27, CNN and the BBC reported that both engines of the Boeing 737-800 that crashed at Muan International Airport on December 29 had feathers and blood stains.

According to Fox News, the crash is thought to have involved a flock of Baikal teal, a migratory bird that is frequently found in East Asia.

According to ABC News, the report also verified that the last four minutes of the recordings are missing and that flight data and cockpit voice recorders malfunctioned before the crash.Air traffic control advised the aircraft to be “cautious of bird activity” just before the recording’s conclusion, according to the outlet.