COOS BAY -- A 43-year-old Coos Bay man was killed Monday when his four-wheeler rolled over.
According to the Coos County Sheriff's Office, Eric Osterson left his home around 2 a.m. to go riding on West Fork Millicoma Road.
When he hadn't returned several hours later, his family went looking for him. They found him about 8:30 a.m., lying by his ATV on a gravel road near milepost 8.
Investigators determined that his ATV had traveled off the road up an embankment and rolled over, inflicting fatal injuries.
Osterson wasn't wearing a helmet at the time of the crash.
The Coos County Medical Examiner's Office is assisting deputies with the investigation. Deputies say alcohol is being considered as a factor in Osterson's death.