Officials in Coos County, Ore., say a 43-year-old Walker, Mich., man was shot and killed allegedly by a gunman who later took his own life.

Oregon officials say David Jess Hortman was shot fatally while he slept in his vehicle at a state beach. He had decided to stay in Oregon for a week's vacation after attending a recreational vehicle show as an exhibitor.

Coos County District Attorney Paul Frasier says the suspected gunman, Zachary Levi Brimhall, later took his own life in undisclosed circumstances. The suspect is said to have harmed his 58-year-old father, Ray Brimall.

Oregon officials say they uncovered bomb-making materials in the suspects vehicle.