Authorities have identified a 30-year-old man who died in a one-vehicle crash west of Spearfish.
The South Dakota Highway Patrol says Adrian Gourneau of Spearfish died after he lost control of a pickup truck he was driving early Wednesday.
The pickup rolled after sliding into the ditch. The Highway Patrol says Gourneau was ejected from the truck and died from his injuries.
A 27-year-old female passenger received serious injuries that weren't a threat to her life. The Highway Patrol is investigating the crash.