The murder of a high school student in Gwangju and an alleged cover-up attempt by police have abruptly disrupted a policy push to strip prosecutors of all remaining investigative powers. The killing by Jang Yoon-gi, son of a police officer, has raised the question of whether Korea should press ahead with institutionalizing unchecked police power at the very moment its dangers have been laid bare. A special investigation team under the National Police Agency probing the alleged misconduct in the investigation of the murder case visited the office of the Gwangju Metropolitan Police’s commissioner and other top command posts to collect evidence, expanding its inquiry to the police leadership. This came after investigators named the chief of Gwangsan Police Station in the city, the leader of the violent crimes team and his members as criminal suspects. The team leader was arrested last week on charges including leaking official secrets and destroying evidence. Investigators are also probing Jang's father — himself suspected of destroying key evidence — on suspicion of colluding with