Police said Tuesday they are investigating 16 people for their violent acts during rallies after the Constitutional Court’s ouster of former leader Park Geun-hye. The National Police Agency (NPA) said they are looking into 21 cases that took place during rallies Friday and Saturday, after the court’s ruling was delivered. One of the suspects is a 65-year-old Park supporter, identified only by his last name Jeong, who allegedly took control of a police bus and rammed it into other buses Friday. A 72-year-old participant, surnamed Kim, was injured by a heavy speaker that fell from one of the buses and died later that day. Jeong has been formally arrested by police.