"To Prevent Another 'Jang Yunki Case'... Legal Community Unites in Calling for Retention of Prosecutors' Supplementary Investigative Authority"

Simple Murder Charge Upgraded to "Murder with Intent to Commit Rape"

Evidence of Collusion with Active Police Officer and Evidence Destruction Uncovered

The importance of prosecutorial oversight in the judicial system is coming to the forefront following the 'Jang Yoonki case,' in which a high school girl returning home was abducted and murdered with a weapon. The incident, which was initially forwarded to prosecutors as a simple murder charge, was later revealed through a supplementary investigation by the prosecution to be a crime committed with the intent of sexual assault. This supplementary investigation uncovered collusion between the suspect's father, an active-duty police officer, and the investigative team, as well as indications of deliberate evidence destruction. As a result, the rationale for maintaining the prosecution's supplementary investigation authority is growing stronger.

The incident began in May in Gwangju, when Jang Yoonki (23) murdered a high school girl with a weapon while she was on her way home. The police initially referred Jang on charges of simple murder. However, the prosecution, through a supplementary investigation, changed the charge to 'rape-murder' and indicted him under detention. The case caused a major stir, especially when it was revealed during the investigation that Jang's father, a senior police officer, obtained confidential information about the investigation from his colleagues and destroyed key evidence.

According to the legal community on July 7, this case is regarded as a representative example demonstrating the need to retain the prosecution's authority for supplementary investigation. They argue that if this authority is abolished under the current investigative structure, it would be impossible to control insufficient police investigations and similar mistakes.

Former and current prosecutors generally agree that if the supplementary investigative authority is abolished, police collusion cases similar to the Jang Yoonki case could occur again. Kwon Naegeon, attorney at Trinity Law Firm (Judicial Research and Training Institute, 35th class), said, "If a case is to be referred with the suspect in custody, an in-depth investigation should be conducted from the start, but this case shows that did not happen." He added, "As a serious crime, the investigation into the suspect's tendencies and motives was not thoroughly carried out."

There was also criticism of the failure to adhere to basic investigative procedures, such as insufficient evidence collection and the leaking of warrant information during the police investigation. Attorney A, a former chief prosecutor, stated, "One of the key issues is to find the motive for the rape, and while there are photos of sex dolls and the like, the absence of physical evidence is unacceptable from a practical investigative standpoint." He added, "The vehicle with bloodstains, which was returned to the father the day after the arrest, should have at least been retained during the detention period."

Regarding the police informing the suspect’s father of their plan to apply for an arrest warrant, Attorney Kwon said, "This can be considered a criminal act corresponding to the unauthorized disclosure of official secrets." There are also concerns that such problems may be even more pronounced in economic crimes. Attorney B, a former chief prosecutor, said, "The inadequacy of the police investigation, as revealed in the Jang Yoonki case, would become even more fatal in legal cases such as fraud or embezzlement, where there is no clear physical evidence, compared to serious crimes like this one."

The legal community believes that if supplementary investigative authority is fully abolished, or if only the right to request supplementary investigation is included in the amendment to the Criminal Procedure Act, similar "police cover-up investigations" could become even more frequent. This is because the mechanism to control police investigations would disappear if the prosecution's supplementary investigative authority is lost. Another attorney, also a former chief prosecutor, pointed out, "Investigation is an exercise of public authority with compulsory power," adding, "An investigation or right to request supplementary investigation without compulsory power would be ineffective."

This content was produced with the assistance of AI translation services.