Former President Yoon Suk Yeol Summonsed Over Martial Law Justification
Former President Yoon Suk Yeol appeared before the Comprehensive Special Prosecutor’s team in Gwacheon on June 6, 2026, as a suspect in an abuse of power investigation. The probe centers on allegations that Yoon ordered the justification of the December 3 emergency martial law to be communicated to allied nations, including the United States, under the premise of protecting liberal democracy.
Why was former President Yoon summoned by the Special Prosecutor?
The Special Prosecutor is investigating charges of abuse of power. Specifically, the team is examining whether Yoon directed the National Security Office and the Ministry of Foreign Affairs to send messages to allies claiming the December 3 martial law was justified.

According to the investigation, the National Security Office requested the National Intelligence Service (NIS) to explain the background of the martial law to allied countries the day after the declaration. The message allegedly framed the action as a necessity for the “defense of liberal democracy.”
The Special Prosecutor’s team determined that former NIS Director Cho Tae-yong ordered the translation of this message into English. An overseas department under the NIS first deputy director then delivered the explanation directly to a US Central Intelligence Agency (CIA) official.
How did the summons process unfold?
Yoon arrived at the Gwacheon office at approximately 9:46 AM in a transport vehicle. He entered through the underground parking garage, keeping his appearance private following strong objections from his legal team.
Attorneys Chae Myung-sung and Yoo Jung-hwa stated they would cooperate with the investigation. However, they argued that the probe is forcibly targeting actions that do not constitute a crime.
The appearance followed a period of tension. The Special Prosecutor originally planned the summons for late last month, but Yoon’s side refused, citing trial schedules. The team eventually coordinated this Saturday appearance after warning that forced summons would be considered following three refusals.
What may happen next in the investigation?
The Special Prosecutor’s team is likely to focus on the specific intent behind the “justification messages.” Investigators may seek to verify the exact instructions given to the National Security Office and the Ministry of Foreign Affairs.

Depending on the findings from this interrogation, the team could pursue further evidence regarding the coordination between the NIS and the CIA. The outcome of this session may determine if additional charges are filed or if the current abuse of power case moves toward a formal indictment.
Frequently Asked Questions
What is the primary legal charge against Yoon Suk Yeol?
He is being investigated as a suspect for abuse of power related to the December 3 emergency martial law.
Who delivered the translated justification message to the US?
The message was translated by an overseas department under the NIS first deputy director, following instructions from former NIS Director Cho Tae-yong, and was delivered to a US CIA official.
Why was the appearance not public?
While the Special Prosecutor initially wanted a public appearance for the public’s right to know, they changed to a private summons due to objections from Yoon’s legal team.
Do you believe the use of intelligence agencies for diplomatic justification should be categorized as an abuse of power?