A Gillette man died in a single-vehicle rollover crash near Wright on Sunday, according to a news release from the Wyoming Highway Patrol on Monday.

Troopers were dispatched to the area on Wyoming Highway 59 about 5 p.m. Sunday.

60-year-old Dale Patterson was driving the truck south on the highway when he sustained a medical emergency that caused him to drift off the right shoulder.

The truck stopped after colliding with three fences.

Patterson was taken to the Campbell County Memorial Hospital but died from the medical emergency.