At least 58 bodies had been recovered but that number was not final, another fire official told Reuters.
Authorities had worked to rescue people in the tail section, an airport official told Reuters shortly after the crash.
Video shared by local media showed the twin-engine aircraft skidding down the runway with no apparent landing gear before slamming into a wall in an explosion of flame and debris. Other photos showed smoke and fire engulfing parts of the plane.
The crash is the worst involving any South Korean airline since a 1997 Korean Air crash in Guam that killed more than 200 people, according to transport ministry data.
Investigators are looking into bird strikes and weather conditions as possible factors, Lee said. Yonhap cited airport authorities as saying a bird strike may have caused the landing gear to malfunction.
A passenger texted a relative to say a bird was stuck in the wing, the News1 agency reported. The person’s final message was, “Should I say my last words?”
The passengers included two Thai nationals and the rest are believed to be South Koreans, according to the transport ministry.
The plane was a Boeing 737-800 jet operated by Jeju Air, which was seeking details of the accident, including its casualties and cause, an airline spokesperson said. The transport ministry said the plane was made in 2009.
Jeju Air posted a message apologising for the accident.
Boeing said in a emailed statement, “We are in contact with Jeju Air regarding flight 2216 and stand ready to support them. We extend our deepest condolences to the families who lost loved ones, and our thoughts remain with the passengers and crew.”
The US Federal Aviation Administration did not immediately respond to a request for comment.
All domestic and international flights at Muan airport had been cancelled, Yonhap reported.
South Korean acting President Choi Sang-mok, named interim leader of the country on Friday in an ongoing political crisis, arrived at the scene of the accident and said the government was putting all its resources into dealing with the crash.
The tragedy comes as South Korea is embroiled in a huge political crisis triggered by former president Yoon Suk Yeol’s stunning imposition of martial law and ensuing impeachment.
Last Friday, South Korean lawmakers impeached the acting president, Han Duck-soo, and suspended his duties, making Deputy Prime Minister Choi Sung-mok take over.
Thai Prime Minister Paetongtarn Shinawatra sent condolences to the families of the dead and injured in a post on X, saying she had instructed the foreign ministry to provide assistance.
The ministry said in a statement it was in touch with the South Korean authorities.