Seoul, Jan. 26 -- Prosecutors have formally indicted South Korean President Yoon Suk Yeol on charges of organizing an insurrection related to his brief declaration of martial law last month. With this, Yoon Suk Yeol becomes the first sitting South Korean president to be indicted while in detention, according to a report by Yonhap News Agency.

The indictment comes just one day before Yoon's detention was scheduled to expire. He had been taken into custody on January 15 by the Corruption Investigation Office for High-ranking Officials (CIO) over his December 3 declaration of martial law. Yoon was officially arrested on January 19.

Since the CIO lacks the authority to indict a sitting president, the case was transferred to the prosecution ...