Ruling Party Proposes Full Abolition of Prosecutors’ Supplementary Investigation Rights

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The ruling party in South Korea has adopted a policy to completely abolish the prosecution’s supplementary investigation power, marking a significant shift in the country’s legal landscape as the prosecution prepares to transition into a public prosecution office. This decision, announced on July 27, 2026, has placed the prosecution at a critical juncture, according to multiple sources.

The supplementary investigation power allows prosecutors to request additional evidence or re-examine cases after a prosecution decision, a process critics argue can delay justice and create opportunities for procedural loopholes. By eliminating this authority, the ruling party aims to streamline legal procedures and reduce potential conflicts between investigative and prosecutorial roles.

According to a source close to the party’s legal reform committee, the move aligns with broader efforts to modernize the judicial system. “This policy reflects a commitment to ensuring transparency and efficiency in legal processes,” the source stated. However, the decision has drawn sharp criticism from legal experts and opposition figures, who warn it could undermine the prosecution’s ability to address complex cases.

The prosecution’s transition to a public prosecution office, a structural reform proposed by the previous administration, has been a contentious issue. The new policy, which takes effect immediately, could complicate this transition by altering the balance of power between investigative and prosecutorial functions.

Legal analysts have pointed to the potential implications of this shift. “Abolishing supplementary investigations may reduce the risk of prolonged litigation, but it also limits the prosecution’s capacity to revisit cases where new evidence emerges,” said Dr. Min-jun Park, a constitutional law professor at Seoul National University. “This could create challenges in maintaining accountability, particularly in high-profile or politically sensitive cases.”

The National Prosecutors’ Office (NPO) has not issued an official statement on the policy change. However, internal memos obtained by local media suggest that prosecutors are preparing for a period of uncertainty. “The NPO is assessing how this decision will affect ongoing investigations and future case strategies,” one memo read.

The ruling party’s decision comes amid heightened political tensions. Earlier this week, former presidential aide Jeong Sung-ho publicly expressed regret over his role in a controversial legal case, a statement that the Blue House later denied as “unfounded.” While the connection between the two events remains unclear, some observers suggest the legal reforms could be part of a broader strategy to address public concerns about judicial impartiality.

The National Assembly is expected to debate the policy in the coming weeks. A draft bill outlining the abolition of supplementary investigations is already under review, with lawmakers from both major parties expressing divided opinions. “This is a pivotal moment for South Korea’s justice system,” said Representative Yoon-jung Lee, a member of the opposition People’s Power Party. “We must ensure that reforms do not compromise the rights of citizens or the integrity of legal proceedings.”

Cybersecurity experts have also weighed in, noting that the policy change could impact digital evidence handling. “If prosecutors lose the ability to request additional investigations, it may affect how digital footprints and electronic data are analyzed in criminal cases,” said Dr. Ji-hoon Kim, a cybersecurity researcher at the Korea Advanced Institute of Science and Technology. “This requires careful oversight to prevent procedural gaps.”

As the legal community grapples with the implications, the public remains divided. Protests have erupted in Seoul and Busan, with demonstrators demanding greater transparency in judicial reforms. “We need a system that serves the people, not just the powerful,” said a protester holding a sign reading “Justice for All.”

The outcome of this policy shift will likely shape South Korea’s legal framework for years to come. With the National Assembly’s deliberations ongoing and public scrutiny intensifying, the road ahead for the prosecution and the broader judicial system remains uncertain.

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“Abolishing supplementary investigations may reduce the risk of prolonged litigation, but it also limits the prosecution’s capacity to revisit cases where new evidence emerges.”
Source: Dr. Min-jun Park, Seoul National University

Quoted text
“This is a pivotal moment for South Korea’s justice system. We must ensure that reforms do not compromise the rights of citizens or the integrity of legal proceedings.”
Source: Representative Yoon-jung Lee, People’s Power Party

Quoted text
“If prosecutors lose the ability to request additional investigations, it may affect how digital footprints and electronic data are analyzed in criminal cases.”
Source: Dr. Ji-hoon Kim, Korea Advanced Institute of Science and Technology