The State Patrol continues to investigate what caused a Hartline, WA man to veer over the centerline, and strike an oncoming semi early Monday morning.

The crash, which occurred right by the Wallula Junction on Highway 12, closed the highway for several hours, and killed 21-year-old Logan J. Thompson.

He was Eastbound when his Dodge pickup crossed the centerline, and hit a semi driven by Brent A. Kyser of Powell Butte, OR.  He was not seriously injured.

The highway was closed from 1:30am, the time of the crash, until about 6:45am Monday.