UPDATE: Shimojima was located safely in Shelton, Washington, Friday evening.
Eighty-six-year-old Joe Shimojima, who suffers from Alzheimer's, was least seen around 1:30 p.m. in Port Townsend.
Shimojima found hidden keys for a tan 2006 Buick Rendezvous while his son was showering.
He may be traveling to a previous residence in Winlock, Washington.
Shimojima is described as Asian with white hair, brown eyes, and a longer white goatee. He is five feet tall and weighs 135 lbs.
He was last seen wearing black sweatpants, a black t-shirt with a race car and a reddish purple flannel.
The car has a Washington license plate 338VJG.
Anyone with information should contact 360-385-2322 immediately.