PORTLAND, Ore. (AP) — A gunman who fatally shot his father and then a man camping at an Oregon beach left a suicide note that said he was mentally ill and planned to "kill a bunch of other people" and then himself.

Zachary Brimhall's message says he had been mentally ill his entire life. His note says he'd reached the point of deciding just to kill himself or to kill others and then himself.

He wrote: "I chose the latter."

The 32-year-old Brimhall drove to a beach where he shot five cars in a parking lot, killing a Michigan camper who was asleep.

Later Tuesday, his father was found dead on a logging road in southwest Oregon.

The suicide note was released Friday by Coos County District Attorney R. Paul Frasier.