Alleged Bias: Investigating the Investigators

South Korea’s system of special prosecutors under scrutiny for alleged bias politically in case involving Mother Han and former Unificationism leaders

On 2^nd June 2026, South Korea’s 24-hour news channel YTN reported on a growing political and legal controversy involving an investigation into alleged favoritism during a high-profile special prosecutors’ probe connected to the Family Federation for World Peace and Unification – in Korea often simply called Unificationism (통일교). The case has attracted significant attention because it touches on sensitive issues of political impartiality, prosecutorial conduct, and the relationship between religion, business, and politics in South Korea.

See also Complaint Filed Against Lead Special Prosecutor

See also Mother Han Denies Charges, Declines to Testify

See also Mother Han Delivers 10-Minute Court Statement

See also Defense Challenges Core Claims of Indictment

See also Burden of Successor: Founders and Their Heirs

See also South Korea’s Slide Toward Authoritarianism

See also “Church Closure” Risks in South Korea’s New Bill

At the center of the dispute is the Corruption Investigation Office for High-ranking Officials (CIO), an independent agency established to investigate alleged crimes by senior public officials. The CIO is currently examining claims that a team of special prosecutors (특별검사팀) led by Min Joong-gi (민중기) conducted a politically biased investigation when looking into allegations that figures associated with Unificationism provided money or other benefits to politicians.

According to YTN, the CIO recently questioned Park Sang-jin (박상진), a former assistant special prosecutor (counsel) who worked on the investigation. He was interviewed as a witness rather than as a suspect. The questioning marks an important step in the CIO’s efforts to determine whether the team of special prosecutors improperly focused its investigation on members of the conservative People Power Party (PPP) while failing to investigate politicians affiliated with the liberal Democratic Party of Korea (DPK).

The allegations emerged from statements made by Yoon Yeong-ho 윤영호, a former senior official of Unificationism. Yoon has himself been indicted on charges related to the alleged provision of money and valuables to prominent political figures, including Kim Keon-hee (김건희), the wife of former President Yoon Suk-yeol (윤석열), and National Assembly member Kweon Seong-dong (권성동).

During his own criminal trial, Yoon argued that he had informed investigators about contacts not only with conservative politicians but also with politicians belonging to the Democratic Party. He complained that these statements did not appear in the evidentiary materials presented in court. His claim raised questions about whether investigators had selectively pursued certain political figures while ignoring others.

The team of special prosecutors has rejected accusations of political bias. According to its explanation, Yoon’s statements concerning Democratic Party politicians were recorded in an investigative report. However, the team concluded that those matters did not fall within the legal scope of the special prosecutors’ mandate under the relevant legislation. Investigators therefore intended to transfer the information to other authorities for possible future action rather than pursue it themselves.

Despite this defense, the controversy continued to grow. The People Power Party accused the team of special prosecutors of conducting a partisan investigation and formally filed a complaint against Special Prosecutor Min Joong-gi (민중기). Critics argued that if investigators possessed information suggesting potential wrongdoing involving politicians from multiple parties, they should have treated all such leads consistently.

The CIO subsequently launched its own investigation into the matter. Earlier this year, investigators executed search-and-seizure operations at the offices used by the team of special prosecutors and obtained mobile phones belonging to both Min and Park. These measures indicate that the CIO is treating the allegations seriously and is seeking documentary and electronic evidence that may shed light on how investigative decisions were made.

YTN reported that Min Joong-gi has already been formally registered as a suspect in the CIO’s investigation. Based on evidence collected so far, including witness testimony from former members of the team of special prosecutors, the agency is expected to summon him for questioning in the near future. Investigators will likely focus on whether decisions about investigative targets were made on legal grounds or whether political considerations influenced the course of the inquiry.

For international observers, the case illustrates the intense scrutiny applied to politically sensitive investigations in South Korea. The dispute is not primarily about whether the underlying allegations involving Unificationism are true or false; rather, it concerns whether investigators applied the law impartially. As the CIO’s investigation progresses, the outcome could have important implications for public confidence in South Korea’s system of special prosecutors and the perceived neutrality of major corruption investigations involving prominent political figures.

See also Complaint Filed Against Lead Special Prosecutor

See also Mother Han Denies Charges, Declines to Testify

See also Mother Han Delivers 10-Minute Court Statement

See also Burden of Successor: Founders and Their Heirs

See also Defense Challenges Core Claims of Indictment

See also South Korea’s Slide Toward Authoritarianism

See also “Church Closure” Risks in South Korea’s New Bill

Text: Knut Holdhus, editor

Featured image above: Special prosecutors Min Joong-gi (민중기) – left – and Park Sang-jin (박상진). Images by Grok xAI.

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