Police are looking into a physical abuse case by a male teacher at Nakayama Elementary School in Toyota, Aichi Prefecture, in which a 12-year-old student suffered a broken bone in his back.

According to the school and the municipal board of education, the 42-year-old teacher who runs the school's basketball club threw one of the team members out of the gym to punish him for bad behavior.

The altercation occurred on March 4 after a game between the basketball club's sixth-graders and a team of teachers that included the club head.