BECKER COUNTY, Minn. -- A North Dakota man died Friday night in an ATV crash in northern Minnesota. 

The Becker County Sheriff's Office says the crash happened around 10:15 p.m. on Northeast Rock Lake Road in Holmesville Township, which is roughly 55 miles east of Fargo. 

Investigators believe the ATV was speeding when it left the roadway, struck a tree and rolled. The driver, 27-year-old Casey Arneson of Fargo, was killed. His passenger, a 29-year-old northern Minnesota man, suffered injuries described as non-life-threatening.

While the two were wearing seatbelts in the vehicle, which was described as a side-by-side UTV, they were not wearing helmets. 

The crash remains under investigation.