On November 26, 2023, a special counsel team announced the indictment of Oh Dong-woon, the head of the Corruption Investigation Office for High-ranking Officials (CIO), and his deputy, Lee Jae-seung, on charges of dereliction of duty. This significant legal development marks the first time since the CIO’s establishment in 2021 that its leadership has faced indictment.
The charges stem from the CIO’s handling of a criminal complaint involving one of its own prosecutors, Song Chang-jin. Democratic Party lawmakers had accused Song of perjury related to his testimony before the National Assembly concerning his knowledge of individuals connected to the death of a young Marine, Cpl. Chae Su-geun, in July 2023. According to legal requirements, the CIO was obligated to notify the Supreme Prosecutors Office about the complaint against Song; however, they failed to do so for a substantial period of 11 months. The special counsel team inferred that CIO leaders opted not to act on the complaint, perceiving it instead as a politically motivated attack against them.
Beyond the indictment of Oh and Lee, the investigation revealed that some officials within the CIO, including Song, may have obstructed the agency’s investigation into the Marine’s death. The counsel believes that this obstruction aimed to shield then-President Yoon Suk Yeol from scrutiny. Song has been indicted separately for abuse of authority, as he allegedly hindered initiatives that sought search-and-seizure warrants targeting President Yoon and former Defense Minister Lee Jong-sup in connection to the Marine case.
This series of legal actions against high-ranking officials, including an indictment against former President Yoon for alleged undue influence on military investigations, illustrates the ongoing political tensions and allegations of corruption in South Korea. The special counsel is delving into possible interference by Yoon’s administration in the Marine death investigation, which has become a focal point for criticisms of the government’s transparency and accountability.
In summary, the indictment of the CIO’s leadership and their involvement in the Marine death investigation not only highlights issues within the agency but also reflects broader controversies surrounding political accountability in South Korea. The developments pave the way for further investigations and potential legal ramifications for top officials involved in the case.






