The man who was struck and killed by a Frontier Airlines jet after he jumped a perimeter fence at Denver International Airport intended to kill himself, officials confirmed Tuesday. The man was identified as 41-year-old Michael Mott, according to Sterling McLaren, Denver’s chief medical examiner. The manner of death was ruled a suicide. Denver police are continuing to investigate his motivations. Frontier Flight 4345, an Airbus A321, was departing Denver en route to Los Angeles on Friday and carried 224 passengers and seven crew members, the airline said in a statement at the time. “We’re stopping on the runway,” a pilot said, according to audio from ATC.com. “We just hit somebody. We have an engine fire.” Twelve people were injured after smoke filled the cabin and passengers had to evacuate on emergency slides. Five were taken to the hospital for injuries, and four have already been released. There are about 36 miles of perimeter fence surrounding the airport.…