An Illinois man died in a motorcycle accident Saturday afternoon in the northeast section of Yellowstone National Park, the National Park Service said Monday.

Jay Fitzgerald, 53, of Downs, Ill., and two companions had rented motorcycles for a trip from Belgrade, through the park, over the Beartooth Pass and back, the park service said in a written statement.

Fitzgerald was trailing the other two riders as they headed east past the turnoff to the Slough Creek Campground into the Lamar Canyon around 3 p.m. Saturday, the park service said.

Fitzgerald's red Harley-Davidson struck a rock wall at the east end of the canyon. The motorcycle remained on the road, but Fitzgerald went over the rock wall and down an embankment.

No one saw the accident, the park service said.

Fitzgerald was unconscious and not breathing when bystanders reached him. The helmet he was wearing had come off, and he suffered severe head trauma. Fitzgerald was declared dead at the scene.