SEOUL, South Korea (AP) — A plane with malfunctioning landing gear veered off the runway, hit a fence and caught fire Sunday at an airport in southern South Korea, killing at least 28 people, according to the emergency office and local media.

The emergency office said the fire was almost put out and rescue officials were trying to remove passengers from the Jeju Air passenger plane at the airport in the southern city of Muan. It said the plane with about 180 people was returning from Bangkok.

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South Korean media outlets including Yonhap news agency reported that at least 28 people had died in the fire. The Muan Fire Station said it couldn't immediately confirm the casualty reports. It said emergency workers pulled out at least two passengers.

Yonhap reported the plane veered off the runway and collided with a fence. Emergency officials said they were examining the exact cause of the fire.

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Local TV stations aired footage showing thick pillows of black smoke billowing from the plane engulfed with flame.

The incident came as South Korea is embroiled into a huge political crisis triggered by President Yoon Suk Yeol's stunning imposition of martial law and ensuing impeachment. Last Friday, South Korean lawmakers impeached acting President Han Duck-soo and suspended his duties, making Deputy Prime Minister Choi Sang-mok to take over.

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Choi ordered officials to employ all available resources to rescue the passengers and crew, according to Yonhap news agency.