The joint investigation unit, composed of the Corruption Investigation Office for High-ranking Officials (CIO), the National Office of Investigation (NOI) and the defense ministry's investigative ...

Scrutiny intensifies over CIO’s role in Yoon investigation The chief prosecutor of the Corruption Investigation Office for High-ranking Officials, which is leading a joint probe into allegations ...

The chief of South Korea anti-corruption investigative agency on Tuesday apologized for the failure last week to arrest the impeached President Yoon S ...

SEOUL — South Korean investigators will seek an extension of a warrant to arrest impeached President Yoon Suk-yeol, an ...

The Corruption Investigation Office for High-ranking Officials (CIO) sent an official document late Sunday to the National Office of Investigation (NOI) of the Korean National Police Agency, ...