A person who jumped a fence and was on a runway at Denver International Airport was hit and killed by a Frontier Airlines plane during takeoff. The collision caused an engine fire and forced passengers to evacuate. The person was not believed to be an airport employee. The airline confirmed that flight 4345 was the involved in the collision and that smoke was reported in the cabin and the pilots aborted takeoff. 12 passengers sustained minor injuries and five taken to hospitals. The incident occurred a day after a Delta Air Lines employee was killed while working at the Orlando International Airport.