The National Park Service is investigating the death of a man who was found at Acadia National Park on Monday afternoon.

Park dispatchers received a report that the man, who has not been identified, was found unresponsive near his vehicle around 4 p.m., park officials said.

He was parked at the side of Schoodic Loop Road, south of the park’s Frazer Point in Winter Harbor. Park rangers and first responders arrived and pronounced him dead, the park service said in a statement.

The cause and manner of his death will be determined by the Office of the Chief Medical Examiner in Augusta.

John Kelly, a spokesperson for the park, said “there was no threat to public safety at any time” related to the death, and that no one had been reported missing.