The severe winter weather contributed to the deaths of three people in a collision north of Casper on Monday, a Wyoming Highway Patrol spokesman said Tuesday.

At 6:45 p.m., patrolmen responded to the collision on Wyoming Highway 259 north of the Naval Petroleum Reserve, said Division Lt. Chris Schell.

A 51-year-old man was driving a Ford Taurus southbound when it crossed the center line and struck a Chevrolet Cruze going northbound, Schell said.

The driver of the Taurus was not wearing a seat belt, was ejected and came to rest on the road, he said.

A pickup behind the Cruze then ran over the man, Schell said.

The 28-year-old male driver of the Cruze was wearing a seat belt and died at the scene. A 29-year-old female passenger was injured and died either on her way to or at the Wyoming Medical Center, he said.

A 2-year-old boy in the Cruze was not ejected and taken to the hospital where he is in stable condition, Schell said.

The Wyoming Highway Patrol is not releasing the names until family members have been notified, he said.

The accident is still under investigation.

Schell did not know of any other fatal accidents on Wyoming highways as a result of the storm, he said.