(Salem, OR)  --  An investigation is ongoing into the officer-involved shooting death of a man at a Goodwill Store in West Salem.  The Polk County Sheriff's office says the shooting happened during a drug sting operation at the store on Edgewater Street Northwest yesterday afternoon.  Police say undercover officers met a suspect there under the guise of purchasing drugs from him.  One of the officers opened fire while trying to take the man into custody.