Authorities say a 62-year-old Utah man died when his motorcycle crashed near Fort Peck.
The Montana Highway Patrol says the man was driving south on Highway 24 when he drifted across the center line and drove into a ditch.
The Billings Gazette reports the man was not wearing a helmet and was thrown from the bike.
He was pronounced dead at the scene by McCone County authorities.
Police have not released the man's name or hometown.