The hearings in his separate impeachment trial at the Constitutional Court concluded in late February, and that court is expected to rule soon on whether to formally remove him from office or reinstate him.

South Korean President Yoon Suk Yeol, who lawmakers voted to impeach and was indicted on criminal charges for declaring martial law last December, was cleared to be released from detention on Friday.

A South Korean court cancelled impeached President Yoon Suk Yeol's arrest warrant on Friday, potentially paving the way for his release from jail while he faces trial on insurrection charges over a brief imposition of martial law.

Prosecutor General Shim Woo-jung said he respected the weekend court ruling but did not agree with its assessment that the indictment filing was past the legally allowed expiry time, which the court said made Yoon's detention while on trial illegal.

South Korea President Yoon Suk Yeol has been released after a Seoul court canceled his arrest to allow him to stand trial for rebellion without being physically detained.

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.

Massive rallies in support and against South Korea's impeached President Yoon Suk Yeol divided the heart of the country's capital on Saturday.