Officials are investigating the source of an odour aboard an Allegiant Air flight in the US that caused passengers to evacuate the plane using emergency slides.
Federal Aviation Administration officials say Flight 142 was taxiing for departure at Phoenix-Mesa Gateway Airport when the pilot reported smelling smoke.
Airport spokesman Brian Sexton says there was a smell of smoke in the cabin and authorities believe it came from the plane's electrical system.
The McDonnell Douglas MD-80 was quickly evacuated on a runway, with 162 passengers using the inflatable slides.
Sexton says six people were treated at the scene for minor injuries.
The flight was headed for Wichita, Kansas. A new plane was called in to fly the passengers to their destination.
The FAA says it's investigating.