South Korea’s new crime agency and police face unclear investigation boundaries

South Korea’s Serious Crime Investigation Agency (SCIA) and police face uncertain boundaries between their investigative powers, Yonhap reported from Seoul on October 8. The agency began operating this month after a restructuring of the prosecution system, but a formal committee intended to clarify which body handles disputed cases is not due until after February 5, 2027. For now, the agencies must coordinate directly when their remits may overlap.

Yonhap described possible friction as a concern raised by observers, rather than an established dispute. Its report identified unresolved questions about what counts as a major crime and whether the SCIA must, or is permitted to, investigate less serious offenses connected to the categories assigned to it. The distinction matters when an investigation contains allegations of different severity or crosses more than one category.

Which crimes can the SCIA investigate?

The revised system divides investigative authority among the SCIA and police, while the new Prosecution Service handles decisions on indictments and prosecutions in court. The SCIA’s remit covers seven areas identified by Yonhap: corruption, business and economic crimes, defense procurement, narcotics, national security, cybercrime and distortion of the law. The Korea Times reported that the Corruption Investigation Office for High-ranking Officials also retains responsibility for designated offenses involving senior public officials.

That arrangement can put more than one investigative body near the same case. The Korea Times identified corruption and abuse-of-power allegations involving high-ranking officials as areas where the jurisdictions of the police, SCIA and the office for senior officials could overlap. It reported concerns about how cases will be allocated when their subject matter falls within more than one agency’s remit.

How will agencies settle overlapping cases?

The revised law provides for an Investigation Jurisdiction Coordination Committee to clarify the respective investigative scopes of the SCIA and police, Yonhap reported. Both Yonhap and The Korea Times said the committee will not be established until after February 5, 2027. Until then, the agencies are expected to rely on voluntary or informal consultations and working-level arrangements rather than a completed formal dispute process.

The Korea Times reported that critics fear overlapping powers could lead to duplicated investigations, delayed case transfers or disputes over who is responsible for complex cases. These are warnings about possible effects of the transition, not findings that such problems have already occurred. The reporting does not establish whether consultations have settled any specific jurisdiction question since the SCIA began work.

Ko Beom-seok, commissioner of the Seoul Metropolitan Police Agency, said police would watch closely so the areas of concern did not become reality, according to Yonhap. He also said police would cooperate with the SCIA to minimize confusion after the agency’s launch. His comments set out the police leadership’s stated approach while the formal committee is pending.

Why the transition matters

The overhaul dismantled the previous system in which prosecutors could directly investigate major cases as well as decide whether to indict suspects. The Korea Times reported that the new Prosecution Service can review case files, decide on indictments, request warrants from courts based on investigative agencies’ applications and prosecute cases in court. Prosecutors can ask investigators for additional work, but cannot compel police or the SCIA to follow those requests or conduct supplementary investigations themselves.

The SCIA also began work with a staffing challenge. The Korea Times reported 1,962 applications across two special recruitment rounds for investigators. Even if every applicant were hired, that would fill only 68.3 percent of the agency’s authorized workforce of 2,874, leaving it roughly 900 people short. Application totals do not show how many investigators have actually joined the agency.

The unresolved jurisdiction boundary and the agency’s staffing needs are separate tests of the new system. The immediate question is how officials allocate cases that may fit several investigative remits before the coordination committee exists. The cited reports do not establish the committee’s eventual procedures or show that an operational breakdown has occurred. They do establish that the agencies are operating under the new framework while those questions remain open.