A pickup found by recreational divers in the Columbia River may have cracked a Prosser missing persons case dating back 26 years, the Umatilla County Sheriff’s Office said.
Maynard Koen of Prosser vanished in August 1993, according to a news release from the Prosser Police Department. He was 81 when he went missing.
On Thursday, a couple diving in the Columbia River in Oregon found a pickup submerged in 20 feet of water off the Hat Rock State Park boat launch, the Umatilla Sheriff’s Office wrote in a Facebook post.
The Washington license plates on the sunken Ford Ranger matched Koen’s plates, sheriff’s officials said. On Saturday, a tow truck and dive team pulled the truck from the river.
Investigators inspecting the truck found skeletal remains and a driver’s license issued to Koen inside the rusted-out vehicle, which appeared to have been in the water since he vanished, the sheriff’s office wrote.
A definitive identification will be made by the Oregon State Medical Examiner’s Office, officials reported.