(Beaverton, OR)  --  Investigators with the Washington County Sheriff's Office are asking the public for help in a road rage shooting last Friday that left one man dead.  Detectives say the incident began as a chase between two vehicles on northbound Interstate 5 near I-205.  It continued onto northbound I-217.  The chase ended Southwest 103rd Avenue, where the shooting occurred.  The victim is identified as 51-year-old Mark Stadamire of Salem.  Anyone with information on the shooting is asked to contact the Washington County Sheriff's Office.