Yoon, who was the first sitting South Korean president to be arrested, faces trial on charges of leading an insurrection over his attempt to impose martial law. During Wednesday's seven-hour hearing, a special counsel team argued for the arrest warrant on five key charges, South Korean news agency Yonhap reported.

Former South Korean President Yoon Suk Yeol is back in custody over an independent investigation into his declaration of martial law last year.

Ex-President Yoon Suk Yeol, re-arrested over trying to impose martial law, skips trial citing health reasons. Facing life imprisonment if convicted, Yoon's new charges add to South Korea's political turmoil under the new president's special investigations.