Former Joint Chiefs of Staff Chairman Kim Myung-soo appeared for a pre-arrest warrant hearing on Monday [1].

The legal proceedings signal a deepening investigation into the Dec. 3 emergency martial law decree and the potential criminal liability of South Korea's highest military leadership.

Kim is accused of participating in the military command and control center during the martial law event [1]. Prosecutors allege he issued instructions to the Special Warfare Command and the Capital Defense Command to prioritize martial law affairs [1], [2]. These actions have led to charges of engaging in critical duties related to an internal rebellion [1], [2].

Kim has previously denied the allegations. In a statement on May 27, he said he had no prior knowledge of the emergency martial law [3]. He said he would explain the truth regarding the events [3].

While Kim faces a detention hearing at the Seoul Central District Court, other high-profile figures are also entering the legal fray [1]. Former Seoul Central District Prosecutors' Office chief Lee Chang-soo was summoned for the first time on Monday [1].

Lee's summons is part of a comprehensive special counsel investigation into allegations that an investigation into First Lady Kim Keon-hee was obstructed [1]. The simultaneous movement of these cases highlights a broad push by special prosecutors to address both military overreach and political interference in the judiciary.

Kim is among four top military officials linked to the martial law events [1]. He is scheduled for a second appearance before the comprehensive special counsel in Gwacheon on June 27 [4].

"I had no prior knowledge of the emergency martial law," said Kim Myung-soo.

The simultaneous pursuit of Kim Myung-soo and Lee Chang-soo suggests that South Korean investigators are executing a dual-track strategy to dismantle both the military and legal structures used to support the Dec. 3 decree and protect the presidency. By targeting the Joint Chiefs' former head and a former chief prosecutor, the special counsel is attempting to establish a direct chain of command and a pattern of systemic obstruction that reaches the highest levels of state power.