Keith Arthur Anderson RESOLVED Anderson, circa 2010 Missing Since 01/06/2010 Missing From Anacortes, Washington Classification Endangered Missing Age 62 years old Height and Weight - Distinguishing Characteristics - Details of Disappearance Anderson disappeared from Anacortes, Washington on January 6, 2010. In June 2012, his partial skeletal remains were found in remote Sauk Prairie, Washington. His death remains under investigation. Investigating Agency - Source Information Anacortes Now . .