Passengers on an American Airlines flight were evacuated on to the tarmac of an airport in Colorado as a fire broke out on the plane, sending smoke billowing into the air.
Footage of the evacuation showed passengers huddled on the wing of the Boeing airliner, some holding bags, with flames burning near the bottom of the plane.
The US Federal Aviation Administration (FAA) said passengers used inflatable slides to reach the ground safely at the Denver International Airport. The agency said that it would investigate the cause of the incident.
There were no reports of serious injuries, although the airport later confirmed 12 people were taken to hospital for minor injuries.