*Event date: 2025-07-18*
A Seoul court has rejected former President Yoon Suk Yeol's petition to be released from custody, leaving him detained over his failed attempt to impose martial law and signaling that investigators can continue pressing their case while he remains in detention. The Seoul Central District Court said the request was "without reason," according to The Korea Herald.
The decision came after a hearing that ran for about six hours. The court reviewed the legality of Yoon's arrest and whether it should remain in place, then concluded that the former president should stay behind bars. Yoon had filed for review less than a week after he was placed under arrest at the Seoul Detention Center in Uiwang, south of the capital, on five key charges connected to his martial law bid in December 2024.
His lawyers argued that the allegations could not be supported and said he posed no risk of destroying evidence. They also tried to fold the arrest warrant's five charges into the broader insurrection case already before the court, saying the new counts duplicated the main prosecution. That argument did not persuade the bench. The special counsel team, by contrast, said the charges were serious and that Yoon could influence witnesses or interfere with evidence if released.
The hearing also turned on Yoon's health. He spoke for 30 minutes about his deteriorating condition, and one of his lawyers said he had liver problems and difficulty moving. Those claims did not change the outcome, but they show how detention disputes can mix legal and medical arguments when a former head of state is involved. Yoon's appearance was tightly controlled; he arrived at the court around 9 a.m. and was taken straight into a holding cell vehicle without contact with reporters.
The ruling keeps him in detention at least for the time being. The period spent on the review does not count toward the 10-day initial arrest period, which means the special counsel still has time to decide whether to try to question him again or proceed directly to indictment without further interrogation. That procedural clock matters because it gives prosecutors a narrow window to decide how aggressively to move before the case advances.
Yoon has already shown he intends to resist. The report said he has refused special counsel questioning, skipped his insurrection trial twice and threatened to boycott future hearings unless the special counsel team is removed. He was first arrested in January and released in March after a court accepted his request to cancel that arrest, so the current ruling also shows a judiciary willing to reverse course depending on how it sees the risk and the facts at hand.
For South Korea, the broader significance is that the post-martial-law fallout is still unfolding in real time. One court has now decided that Yoon should remain detained while the case develops. That makes the next move by prosecutors, and Yoon's response to it, the immediate focus of a political and legal crisis that has already reshaped the country's highest office.
