Police said Thursday they have arrested four high school students on suspicion of beating up a younger student in Tokyo's Katsushika Ward.
According to police, the four youths, all aged 15, beat up a 13-year-old boy who attends the same school, on Nov 30. Police said the victim's injuries took about one week to heal.
TBS reported that they contacted the boy on the free instant message application LINE and took him to a park in Shin-Koiwa and under a bridge where they assaulted him for about three hours from 5 p.m.
The boys were quoted by police as saying they didn't like their victim's attitude because he had used social media to post about an earlier incident in which the foursome had beat up a college student and stolen his wallet.© Japan Today