Why it matters. A former head of state is being criminally questioned over an attempt to declare martial law in a major US ally and democracy, and over how his government tried to sell that move to Washington. The outcome tests how South Korea's institutions hold a former leader accountable.
Background. On December 3, 2024, Yoon Suk-yeol abruptly declared emergency martial law, sending troops toward the National Assembly before lawmakers voted it down within hours; he was later impeached and removed, and is now detained. South Korea has appointed multiple independent 'special counsels' — temporary prosecution teams with their own staff and seconded police — to investigate the episode. Yoon's repeated insistence that only a prosecutor, not a police officer, may interrogate him reflects a recurring legal-procedural fight in these probes.
What to watch next. Yoon is set to be questioned again on June 13 on the far more serious charge of leading an insurrection, which carries a possible death penalty.
Former South Korean President Yoon Suk-yeol was questioned for the first time on June 6 by a special counsel team in Gwacheon, just south of Seoul, over allegations that he ordered officials to send messages to the United States and other allied nations justifying his December 2024 martial-law decree. The session, his first before this particular team, ran until about 4:25 p.m. and came 101 days after the unit launched on February 25.
What Yoon Is Accused Of
The case is being handled by the team led by special prosecutor Kwon Chang-yeong, which is investigating the remaining strands of three separate special-counsel probes into Yoon. Prosecutors allege that immediately after Yoon declared emergency martial law on December 3, 2024 — a shock move he reversed within hours under parliamentary and public pressure — he directed the presidential National Security Office, the foreign ministry and the National Intelligence Service to relay messages to allies portraying the decree as legitimate.
According to the reports, those messages told foreign counterparts that the measure was meant “to defend liberal democracy” and that Yoon “maintains a stance opposing pro-North Korean leftists and anti-Americanism.” Investigators believe former National Security Office chief Shin Won-sik and his former first deputy, Kim Tae-hyo, mobilized security and diplomatic officials to deliver the messaging, with one report saying it reached bodies including the US Central Intelligence Agency. The legal charge is abuse of authority and obstruction of the exercise of rights, a standard South Korean statute used against officials who misuse their powers.
Yoon is reported to have denied the allegation during the session, telling investigators he did not issue detailed instructions to the National Security Office.
A Standoff Over Who Could Question Him
The outlets covering the day diverged on its central drama. The conservative-leaning Kyunghyang Shinmun framed it straightforwardly as a roughly six-and-a-half-hour session that began at 10 a.m. and ended at 4:30 p.m., with Yoon arriving discreetly by prison transport van around 9:50 a.m. and avoiding any media exposure.
The Hankyoreh, in an exclusive, reported a sharper backstory: Yoon initially refused to cooperate in the morning, insisting that “a prosecutor must conduct the questioning” because a police officer seconded to the team had been set to lead it. After the team spent hours persuading him, the actual interview began only around 1 p.m., conducted with deputy special prosecutor Kwon Yeong-bin present, and the substantive questioning lasted roughly two hours. Yoon then spent about an hour and 20 minutes reviewing the written record before wrapping up. Despite the morning standoff, the Hankyoreh noted, he answered questions in the afternoon rather than staying silent.
The dispute echoes a prior episode: in June 2024, Yoon similarly refused to be questioned by the Cho Eun-seok special counsel team when a senior police officer led the interrogation, with his lawyers arguing that a “special prosecutor” probe should be run by prosecutors, not police.
A Far Graver Charge Looms
The martial-law messaging case may prove the lighter of Yoon’s exposures before this team. On June 13, the same prosecutors plan to question him over the charge of being a ringleader of insurrection under South Korea’s Military Criminal Act. That statute applies to those who “band together, take up arms and stage a rebellion.” For a designated ringleader, the law prescribes a single possible penalty: death. Those who join in plotting or direct a rebellion face death, life imprisonment, or a prison term of at least seven years.
After Friday’s session, Yoon was returned by a justice ministry transport vehicle to the Seoul Detention Center, where he is being held. As when he entered, his departure was kept out of public view at his own request.
