(Vancouver, WA) -- The Clark County Sheriff's Office plans a new search for a victim in a cold case disappearance. In 1971, Jamie Grissim went missing and was believed to be an early victim of convicted serial killer Warren Forrest. Detectives located 72-year-old Matt McClure who they thought might have information about the case. McClure is not a suspect. His information appears to indicate Grissim's remains might be in the Dole Valley area, where the remains of two other victims were found. A new search is planned for Dole Valley that will include cadaver dogs specially trained to find deeply buried and decades old remains.