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.

At least three people were injured as an airplane caught fire at an airport in South Korea late Tuesday, Yonhap news reported. Fire authorities said the Air Busan plane bound for Hong Kong from Gimhae International Airport in Busan, some 320 kilometers southeast of Seoul, caught fire at its tail before takeoff.

Fire breaks out on an Air Busan A321 bound for Hong Kong at Gimhae International Airport in Busan, South Korea. At around 10:30 p.m. on Tuesday, a fire broke out in the tail section of the aircraft. All 170 passengers and crew evacuated, and there were no casualties,… pic.twitter.com/GqzIkrUx85