The discussion centers on whether the South Korean prosecution should retain the power to conduct supplementary investigations or if such authority should be stripped to ensure a more rigorous separation of investigative and prosecutorial functions.
The debate arrives amid a sharp divide within the National Assembly over the scope of prosecutorial power. While some members of the Democratic Party argue that the prosecution’s ability to conduct supplementary investigations allows for unchecked power and potential political bias, others suggest that removing this authority could create gaps in the legal process, delaying justice for victims and complicating the handover of cases between police and prosecutors.
This conflict is part of a broader, multi-year effort by reformists to dismantle the “monopoly” of the prosecution service. The core of the dispute lies in the “supplementary investigation right” (보완수사권), which allows prosecutors to personally investigate further when they find a police report insufficient for indictment. Critics argue this right effectively bypasses the intended checks and balances of the 2021 investigative power reforms.
The Legal Conflict Over Supplementary Investigation Authority
The Democratic Party’s push to abolish the prosecution’s supplementary investigation authority is rooted in the belief that prosecutors should focus exclusively on indictment and trial. According to reports from Yonhap News, Rep. Kim Yong-min has held press conferences with party members to advocate for the complete removal of these powers, arguing that the current system allows the prosecution to maintain undue influence over the investigative process.
Opposing this view, some political figures argue that the power is a necessary tool for efficiency. Former Minister of Justice Han Dong-hoon has previously emphasized the importance of a streamlined process to prevent cases from languishing in a loop of “request for supplementary investigation” between the police and the prosecution. Without the ability to conduct some level of direct supplementary work, the process can become a bureaucratic stalemate that harms the accused and the victim alike.
The tension has escalated beyond policy debate into personal and political friction. Rep. Kim Nam-hee recently criticized the use of inflammatory language in these discussions, stating that labeling those with differing views on supplementary investigation as “pus” or accusing them of “collusion” is detrimental to democracy, according to reports from Hankyoreh.
Competing Visions for the Justice System
The debate between Lee Kun-tae and Han Dong-hoon highlights two fundamentally different interpretations of the rule of law in South Korea:
- The Reformist View: Proponents like Lee Kun-tae and Kim Yong-min argue that the prosecution’s investigation rights must be severed to prevent the “political weaponization” of the law. They contend that the “right to request supplementary investigation” (보완수사요구권) is sufficient for the prosecution to ensure a case is trial-ready without needing to conduct the investigations themselves.
- The Pragmatic View: Figures like Han Dong-hoon argue that the practical reality of complex financial and white-collar crimes requires a level of investigative expertise that only prosecutors possess. They suggest that a total ban on supplementary investigation would lead to a drop in indictment rates and a failure to hold powerful criminals accountable.
Former lawmaker Song Young-gil has weighed in on this specific technicality, stating that a separate “supplementary investigation right” is unnecessary because the “right to request” such investigations from the police is sufficient to maintain legal integrity, as cited in reports from Daum News.
Political Stakes and the Path to Legislation
The outcome of this debate and subsequent legislative efforts will likely determine the operational structure of the South Korean justice system for the next decade. While the Democratic Party holds significant influence in the legislature, reports from E-Today suggest that there is growing internal noise regarding “exceptions.” Some lawmakers are beginning to acknowledge that certain types of high-level corruption or specialized crimes might require a modified approach rather than a blanket ban on prosecutorial investigation.
The debate is not merely about legal procedure but about the distribution of power. For the Democratic Party, reducing the prosecution’s power is a cornerstone of their platform to ensure that the executive branch cannot use the prosecution to target political opponents. Conversely, the independent and conservative wings argue that stripping these powers weakens the state’s ability to fight organized crime and systemic corruption.
The upcoming debate between Lee and Han is expected to serve as a litmus test for public opinion on these reforms. By moving the conversation from closed-door committee meetings to a public forum, both sides are attempting to frame the narrative: one side focusing on “democratic control” and the other on “investigative efficiency.”
The next critical checkpoint for this issue will be the upcoming legislative session where amendments to the Criminal Procedure Act may be introduced to formally codify the limits of supplementary investigation authority. Further updates on the specific date and venue of the Lee-Han debate are expected to be released by the coordinating parties.
We invite readers to share their views on the balance of power between police and prosecutors in the comments below.