Passengers evacuated from an Air Busan plane that was engulfed in flames this week at a South Korean airport will have their checked baggage returned to them, after authorities on Friday deemed the jet safe for a full investigation.

Authorities will start a joint investigation into the Air Busan A321 that burst into flames at Busan Gimhae International Airport, Yonhap News Agency reports.

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.

A passenger plane has caught fire before takeoff at an airport in South Korea, but all 176 people on board have been safely evacuated.

Concerns have been raised about the safety risk of bringing portable batteries in carry-on luggage for flights, as a lithium-ion battery is suspected as the cause of the fire that

An Airbus plane belonging to South Korean carrier Air Busan caught fire on Tuesday at Gimhae International Airport in the country’s south while preparing for departure to Hong Kong, fire authorities said.

The fire broke out in the back of the cabin, officials said. All 176 people on board, including passengers and crew members, were evacuated, some with minor injuries.

An investigation into a fire that engulfed an Air Busan plane at a South Korean airport this week is being slowed by a large amount of fuel and oxygen still on board, an air crash investigation official told Reuters.

All 176 people were evacuated from an Air Busan jet that caught on fire at a South Korean airport, with reports suggesting a battery could be the cause.