epa12876775 Oh Dong-woon (C), chief of the South Korean Corruption Investigation Office for High-ranking Officials, and others take part in a ceremony at the agency's headquarters in Gwacheon, south of Seoul, South Korea, 09 April 2026, to unveil a plaque displaying the name of its office to which anonymous whistle-blowers can report any breaches in the public sector. EPA/YONHAP SOUTH KOREA OUT