Both crashes involved pickup trucks colliding.
Weekend crashes in northwest North Dakota left two people dead and four others injured.
The Highway Patrol says one crash happened late Saturday on state Highway 40 near Tioga, and the other late Sunday on U.S. Highway 85 near Alexander. Both crashes involved pickup trucks colliding.
Thirty-three-year-old Brent Gardner of Grantsville, Utah, died in the first crash. Forty-three-year-old Jason Smith of Murrieta, Calif., died in the other.
A man from Colorado was injured in the Saturday crash. Two Texas residents and a Nevada man were injured in the Sunday crash.
The crashes happened in western North Dakota's oil patch, where people from around the country are working.