Former President Yoon Suk Yeol had prepared to declare martial law since late 2023, special prosecutors said Monday. In this March 2025 file photo, Yoon arrives at his official residence. File Photo by Yonhap/EPA-EFE

A special counsel team has determined former President Yoon Suk Yeol had prepared to declare martial law since late 2023, about a year before his failed bid in December 2024, officials said Monday.

Assistant special counsel Kim Ji-mi said in a briefing that the team has determined that Yoon had made preparations for martial law since November 2023 after questioning former Joint Chiefs of Staff Chairman Kim Myung-soo.

The now-retired admiral is said to have told the team last month that Yoon asked him whether he would do anything he would order when they met on Nov. 29, 2023.

Yoon allegedly flew into a rage when he said he would follow them if they were just orders.