SCIO, Ore. (AP) — A Linn County sheriff's officer says a missing 91-year-old man with dementia has been found dead in a creek.

Undersheriff Jim Yon says Ashby "Al" Getz was reported missing late Monday night from a residence outside Scio, Oregon. The property backs up to Thomas Creek. Getz had last been seen earlier in the evening reading a book inside the home.

The sheriff's office used deputies, county search and rescue responders and the county dive team to search for the man. The Oregon Air National Guard sent a helicopter.

Yon says the man's body was found by the Oregon Air National Guard on Tuesday morning in the middle of the creek. The dive team recovered the body.

Scio is southeast of Salem.