(Vancouver, WA)  --  An investigation is ongoing into the officer-involved shooting of a man accused of stabbing his girlfriend in Vancouver.  Police say the suspect forced his way into his girlfriend's apartment Sunday and stabbed her before several people inside managed to force him back out.  Police say the suspect then confronted responding officers and refused to drop his weapon, prompting two officers to open fire.  The suspect and the victim were both hospitalized for injuries, along with three other people who sustained injuries while struggling with the suspect.