POST, OR -- One person was killed and another seriously injured in a single-vehicle crash near Post, in Crook County, Tuesday night.

According to State Police, 28-year-old Joshua Perman, of Post, drove off the road and rolled his car several times, just after midnight. Both Perman and his passenger, 46-year-old Alfred Cody, were ejected. Perman was pronounced dead at the scene. Cody was flown to St. Charles Bend.

Speed and alcohol are believed to be contributing factors, and authorities say Perman was not wearing a seatbelt.