POTTAWATOMIE COUNTY, Oklahoma - Authorities with the Oklahoma Highway Patrol (OHP) have released dash cam footage from a Pottawatomie County crash that left one trooper dead and another injured in late January.

Trooper Nicholas Dees was killed and Trooper Keith Burch was severely injured after being struck by a car while investigating a jackknifed semi on the westbound side of I-40, just east of Shawnee around 10 p.m. on Saturday, Jan. 31.

The driver of the vehicle that crashed into the troopers, identified as Steven Wayne Clark of Cushing, was arrested has been charged with first-degree manslaughter.

Investigators believe Clark may have been updating his social media page at the time of the crash.