South Korea's anti-corruption agency on Thursday transferred to prosecutors its case against impeached President Yoon Suk Yeol, recommending his indictment for insurrection and abuse of power over his brief martial law declaration.

The CIO and the prosecution agreed to jointly investigate Yoon's "insurrection" charge by questioning the impeached president for 10 respective days. The prosecution was widely expected to indict Yoon for the "insurrection" and other charges around Feb 5. Yoon rejected the CIO's repeated call to appear for questioning.

South Korean investigators recommended Thursday that impeached President Yoon Suk Yeol be charged with insurrection and abuse of power, as they handed over the results of their probe into his ill-fated declaration of martial law to prosecutors.