Shares of Air Busan dropped on Friday, after a plane belonging to the budget carrier caught fire earlier this week.

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.

Concerns were raised about whether Air Busan’s crew had followed standard safety procedures. Read more at straitstimes.com.