South Korean officials are launching an investigation into the cause of the fire that engulfed an Air Busan passenger plane while awaiting takeoff at Busan's Gimhae International Airport, with some eyewitness accounts leading to speculation that a portable power bank may have caused the blaze.

Shares of Air Busan dropped on Friday, after a plane belonging to the budget carrier caught fire earlier this week. Air Busan shares traded down 3.8% as of 0018 GMT, after falling as much as 6.1% to 2,

This comes a month after the Jeju Air plane crash on Dec. 29, 2024, that killed 179 passengers and crew members. It was the worst domestic civil aviation disaster in South Korea's history. The Jeju Air flight, which was returning from Bangkok, Thailand, veered off the runway and collided with a fence.