Two men died in a two-vehicle collision in southwestern Wyoming on Monday afternoon, according to a news release from the Wyoming Highway Patrol.

Alexander R. Greene, 23, from Philadelphia, and Benjamin K. Darneille, 21, from Rochester, Ill., died at the scene on U.S. Highway 191 about 11 miles northwest of Farson at 4:05 p.m., according to the news release from Patrol Sgt. David Wagener.

For reasons unknown, Greene was driving a sport utility vehicle at an excessive speed northbound in the southbound lane of the highway. Darnielle was the front seat passenger.

The SUV was traveling toward a tractor pulling two trailers driving by Brent Hawkes, 55, of Paul, Idaho. Despite Hawkes' efforts, a head-on collision happened.

Greene and Darnielle died at the scene. Hawkes was taken by ground ambulance to the Memorial Hospital of Sweetwater County in Rock Springs where he was treated and released.

All three men were wearing seat belts.

The Highway Patrol is investigating drug use and driver inattention as contributing factors in this crash. Greene and Darneille marked the 95th and 96th highway fatalities in Wyoming for 2015. There were 99 fatalities in this same time period in 2014.