(Portland, OR)  --  Police have a suspect in custody following a stabbing that seriously wounded a man in Southwest Portland.  Investigators say a man in his 60s was found in a parked car at Southwest 9th and Alder around 10 o'clock last night with a stab wound to the head.  His injuries are described as traumatic but not life-threatening.  The suspect, a man in his 20s, has been arrested.