A passenger jet that belly-landed and crashed at an airport in South Korea on Sunday was found to have hit a concrete structure before hitting the facility's outer wall. South Korean media have reported that colliding with this structure likely led to greater damage to the plane.

The aircraft, operated by the country's low-cost carrier Jeju Air, burst into flames after the crash at Muan International Airport in the country's southwest, killing 179 people aboard.

Two people survived the crash.

South Korea's transport ministry announced in a news conference on Wednesday that the identities of all victims have been confirmed.

The concrete structure was built about 250 meters from the end of the runway as a foundation for an electronic device used for landing called a "localizer."

South Korea's public broadcaster KBS says that it was pointed out in June 2023 that the concrete structure was too close to the runway. KBS also reported an expert's view that the structure should have been made from material that absorbs impact in case of an overrun.

The ministry said in Wednesday's news conference that it will continue the investigation while checking regulations in other countries and collating opinions from experts.