CHEYENNE, Wyo. -- A single-car rollover killed three Colorado men south of Laramie, Wyo.

The crash was reported at 4:49 a.m., Saturday, on U.S. Highway 287, about 12 miles south of Laramie.

The patrol said the crash, involving a 2001 Toyota Solara, killed Camacho and two passengers, Jesus M. Vasquez, 22, and James A. Encinias, 35. All three men were from Greeley, Colo.

Another passenger, Oliver A. Hernandez, 27, of Evans, Colo., survived the crash. Hernandez crawled up an embankment and flagged down a motorist.

The patrol said alcohol is being investigated as a possible cause of the crash.

Comacho was the only person wearing a seat belt, according to a news release from the Wyoming Highway Patrol.

Highway 287 connects Laramie with Fort Collins, Colo.