CASPER, Wyo. — On Dec. 17, Mills resident Lowell L. Campbell was killed driving along Casper Mountain Road after going over the edge of a lookout near milepost 7.

Wyoming Highway Patrol troopers were notified of tire tracks leading toward and damage to a guardrail at around 4 p.m., though the person who made the call didn’t see the vehicle go through it.

Campbell was driving a 2003 Ford F-150 northbound down the mountain when he failed to negotiate a right-hand curve. The vehicle left the roadway, going through the guardrail.

The wreck is still under investigation, and Highway Patrol stated that it is looking into the possibility of driver inattention and speed as potential contributing factors.