(St. Croix Falls, WI)  —  A Prior Lake man is claiming self defense after killing a teenager and wounding four others in a stabbing spree on the Apple River in western Wisconsin.  Prosecutors filed charges yesterday against 52-year-old Nicolae Miu yesterday.  Investigators say he told them he was looking for his friend’s cell phone on Saturday when a group of young people confronted him, then slapped and pushed him.  Witnesses say Miu was acting ‘sketchy’ and slapped a young woman before any punches were thrown.  Police say Miu then started slashing and stabbing.  Miu is looking at homicide charges and is being held on a million-dollars bond.