The police are investigating whether President Yoon Suk Yeol tried to lead an insurrection when he declared martial law and plunged the country into crisis.

A South Korean court gave authorities approval on Tuesday to detain impeached President Yoon Suk Yeol in a criminal investigation into his martial law decree, marking the first time that a sitting president of the country has faced arrest.

South Korean investigators said Wednesday they would implement an arrest warrant for Yoon Suk Yeol over his declaration of martial law by the deadline on Jan. 6, as the impeached leader's supporters rallied outside his residence.