(DENVER, COLORADO) – Authorities identified Michael Mott, 41, as the man who went over the perimeter fence at Denver International Airport and was struck by a Frontier airplane before the flight departed for Los Angeles.

Chief Medical Examiner Sterling McLaren said Mott was drawn into the plane’s engine and died at the scene. McLaren ruled the death a suicide.

The Frontier airplane was preparing for a flight to Los Angeles when the incident happened. Airport officials and federal authorities are investigating.

Michael Mott’s identification answered the central question left after the incident at Denver International Airport, one of the country’s busiest airports and a major base for Frontier. Officials have not released further information about what led up to the moment when Mott went over the perimeter fence.

McLaren’s ruling established the manner of death. His office said Mott died after the engine drew him in on the airfield.

The National Transportation Safety Board joined the inquiry along with the Transportation Security Administration, the Federal Aviation Administration, local law enforcement and airport officials. Each agency has a distinct role in incidents involving secure airport areas, aircraft operations and safety oversight.

NTSB investigators typically examine the sequence of events around an aviation incident, while the FAA oversees civil aviation operations and the TSA handles airport security matters. Local law enforcement and airport officials also remain part of the investigation in Denver.

No agency has announced findings from that work. Officials have not described how Mott reached the airfield beyond saying he went over the perimeter fence.

The case centers on a Frontier airplane at Denver International Airport, where the carrier operates a large share of its flights. The plane had been preparing to leave for Los Angeles when Mott was struck.

Authorities have not released additional details about the passengers or crew aboard the Frontier airplane. They also have not described the immediate impact on airport operations beyond confirming the investigation.

Denver International Airport spans a vast secured airfield, and its perimeter fencing marks the line between public access areas and active aircraft movement zones. Breaches of that boundary draw scrutiny from airport officials and federal regulators because of the risk to people on the ground and to aircraft preparing for departure.

McLaren’s finding closed one part of the case by identifying Mott and ruling his death a suicide. The broader investigation by airport officials, local law enforcement, the FAA, the TSA and the NTSB remains open.