The first report on last month’s Jeju Air crash in South Korea has confirmed 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.

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

South Korea’s authorities investigating last month’s Jeju Air plane crash have submitted a preliminary accident report to the UN aviation agency and to the authorities of the United States, France and Thailand,

The South Korean Transport Ministry announced on Wednesday that the concrete feature would be removed from Muan International Airport, according to Reuters. Most other international airports simply mount similar arrays on breakaway posts to allow planes to overrun the pavement across flat ground.

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.

Bird feathers were found in the engines of crashed Jeju Air jet. Investigators claim they have found evidence of a bir