BOISE, Idaho » A Boise Airport spokesman says some passengers on an Allegiant Air flight from Los Angeles popped emergency doors and evacuated after vapor and odor from a small fuel leak made them concerned about the possibility of fire.

Airport spokesman Sean Briggs says Flight 330 had reached the gate area Friday evening when fuel leaked from an auxiliary motor used for taxiing. He says the passengers could smell the fuel "and the vapor made it look like smoke." Briggs says they popped emergency doors on both sides and some passengers climbed out onto at least one wing.

Briggs says a few passengers jumped from the wing to the tarmac but no one was hurt. A luggage loader was brought out to lift them down to the tarmac.

He says the passengers apparently acted on their own, without being directed by the flight crew.

Briggs didn’t know how many were aboard the plane or how many climbed onto a wing.

The spokesman says the small leak was quickly cleaned up. Briggs says the plane is grounded while officials investigate.

An Associated Press email seeking airline comment was not immediately returned.