The South Korean Supreme Court has issued its first official opinion regarding the debate over abolishing supplementary investigation powers [1].
This move signals a cautious approach by the judiciary to a structural shift in the legal system that could alter how criminal cases are processed and prosecuted. The Court expressed concern that removing these powers without a comprehensive strategy could lead to significant legal gaps.
The Court Administration Office said that the abolition of supplementary investigation powers must be carried out after sufficient deliberation based on the pros and cons, and opinions from various sectors [1]. The office said that sufficient supplementary measures must be prepared to prevent side effects that may occur due to institutional changes [1].
This judicial caution contrasts with the stance of some lawmakers who view the separation of investigation and prosecution as a non-negotiable principle. Rep. Kim Yong-min of the Democratic Party of Korea said that the separation of investigation and prosecution is a fundamental principle that must be observed and cannot be a subject of compromise [1].
Kim made these remarks during a discussion on July 8, 2024 [1]. The debate centers on whether the current system allows for too much overlap in authority or if the removal of supplementary powers would leave the judiciary and prosecution unable to correct investigative errors before a trial begins.
The Supreme Court's intervention highlights the tension between the political drive for a complete separation of powers and the practical necessity of ensuring that criminal evidence is thorough and accurate before reaching the court.
“The separation of investigation and prosecution is a fundamental principle that must be observed and cannot be a subject of compromise.”
The Supreme Court's entry into this debate suggests that while the judiciary recognizes the political momentum toward separating investigative and prosecutorial functions, it fears a drop in the quality of case files. If supplementary investigation powers are removed without a replacement mechanism, the court may face an increase in dismissed cases or procedural errors, potentially undermining the efficiency of the criminal justice system.



