Police will be out in force, and subway stations and at least one school will be closed over safety concerns when South Korea's Constitutional Court rules whether to oust or reinstate impeached President Yoon Suk Yeol.

South Korean President Yoon Suk Yeol, who lawmakers voted to impeach, was released from detention Saturday after spending nearly two months in custody under a criminal probe for his martial law declaration.

South Korean prosecutors continue to seek President Yoon Suk Yeol's conviction for insurrection, despite a court ruling for his release. Prosecutors aim to challenge Yoon's indictment, arguing his detention was illegal.