Two Greeley, Colorado residents were killed in a single-vehicle rollover east of Rawlins Monday evening.

Wyoming Highway Patrol Sgt. Jeremy Beck says 47-year-old Steven C. Seelig was headed west on Interstate 80 when he lost control of his SUV and rolled it near milepost 235.

Seelig and his passenger, 86-year-old Lois W. Seelig, were not wearing their seat belts and died at the scene.

Beck says driver fatigue is being investigated as a possible contributing factor.

​​