ST. ANTHONY, Idaho (AP) — Eastern Idaho officials have identified a North Dakota man killed in a snowmobile crash.

The Fremont County sheriff's office in a news release Monday says 32-year-old Wayne Halverson of Wishek died Saturday in Island Park when he went off a trail and ran into a tree.

Officials say other snowmobilers and emergency responders attempted life-saving measures, but Halverson was pronounced dead at about 8:30 p.m.

Halverson is the fourth snowmobiler to die in eastern Idaho this year. The other three deaths were caused by avalanches.