Friday marks one month since South Korean President Yoon Suk-yeol declared martial law, sparking a political crisis. With investigators seeking to detain Yoon on a disputed warrant, the turmoil has yet to end.

The document issued by a court Tuesday accuses him of orchestrating an insurrection.

Yoon has yet to be detained on the warrant, the first against a sitting South Korean president.

Police and members of the Corruption Investigation Office for High-ranking Officials are behind the warrant which is set to expire Monday. It was sought after Yoon rejected repeated summons.

Yoon's supporters have rallied daily outside the presidential residence in Seoul to block the execution of the warrant. Concerns are growing that they may clash with investigators.

Local media say Yoon issued a message with his signature to supporters on Wednesday. He said he had been watching their protests live on YouTube. He pledged to fight alongside them until the end to protect the country.

Yoon's legal defense team on Thursday filed an objection to the warrant at the court, calling the document illegal.