She was teaching freshmen for the first time . Colleen Ritzer asked Chism , who 'd been doodling , to leave after a class , student says . The student saw the two standing a few feet apart in the classroom , after school . Note : Ritzer was punched before being killed with paper cutter in bathroom . Her body was put in a trash bin , then dumped in nearby river .
Colleen Ritzer asked Chism , who 'd been doodling , to leave after a class , student says . The student saw the two standing a few feet apart in the classroom , after school . Note : Ritzer was punched before being killed with paper cutter in bathroom . Her body was put in a trash bin , then dumped in nearby river .