少年の背中をナイフで刺す　容疑で男子高校生を逮捕　グループ内でトラブルか　京都府警（産経新聞） - Yahoo!ニュース

This page reports that a 17-year-old male high school student in Kyoto was arrested on suspicion of attempted murder for stabbing a teenager in the back with a folding knife on April 2nd. The incident occurred on a street in Ukyo Ward around 7:20 PM. The suspect claims he caused injury while trying to stop a friend's fight and denies intent to kill. The victim sustained minor injuries with no life-threatening condition. Five people, including both suspects, were present at the scene. Police investigate possible troubles within the group.