OSHKOSH, Wis. (AP) — Prosecutors have cleared an Oshkosh school liaison officer who shot a student during a fight of any criminal wrongdoing. Winnebago County Assistant District Attorney Anthony S. Prekop said Monday that Officer Michael Wissink’s decision to use deadly force was justified. Wissink shot then 16-year-old Grant Fuhrman after Fuhrman attacked Wissink in the officer’s office at Oshkosh West High School in December. Fuhrman is accused of stabbing Wissink multiple times with a barbecue fork. Court documents say Wissink couldn’t reach his stun gun so he opened fire. Neither was seriously injured. Fuhrman has been charged with attempted first-degree intentional homicide.