Seoul court acquits ex-President Yoon in marine death obstruction case

September 11, 2026 at 06:05 PM2 min

This digest was compiled by AI from multiple sources — links to the originals are below.

The Seoul Central District Court acquitted former South Korean President Yoon Suk Yeol of charges that he helped ex-Defense Minister Lee Jong-sup evade a probe into a marine's death. The court found no proof that Yoon appointed Lee as ambassador to Australia to obstruct the investigation. Yoon still faces a separate trial over alleged interference in the marine death inquiry.

Key Facts

The Seoul Central District Court acquitted former President Yoon Suk Yeol of helping ex-Defense Minister Lee Jong-sup evade a probe into a marine's death.
Prosecutors alleged Yoon appointed Lee as ambassador to Australia to let him leave the country, but the court found no proof of intent to obstruct the investigation.
Marine Corporal Chae Su-geun drowned in 2023 during a flood rescue operation without protective gear.
Yoon was impeached on December 14, 2024, and removed from office by the Constitutional Court in April 2025.
In February 2026, Yoon was sentenced to life in prison for insurrection; he has appealed the verdict.

Acquittal Ruling

The Seoul Central District Court acquitted former President Yoon Suk Yeol of charges that he aided ex-Defense Minister Lee Jong-sup, who was under investigation over a marine's death. Prosecutors argued Yoon deliberately appointed Lee as ambassador to Australia so he could leave the country, but the court found no proof the personnel decision was meant to obstruct the probe. Yoon said he wanted to strengthen military cooperation with Canberra. Former Justice Minister and the ex-chief of the presidential security service were also acquitted of conspiring with Yoon. The prosecution has not said whether it will appeal the verdict.

Marine Death Investigation

Marine Corporal Chae Su-geun drowned in 2023 during a search-and-rescue operation after a flood. Troops were sent to search for victims without life jackets or other protective equipment. Marine Corps investigators held the division commander and seven others responsible for the incident. Prosecutors say Yoon was angered that the commander was included in the report, after which investigators came under pressure to remove his name. Investigation team leader Park Jung-hoon still handed the report to police, and prosecutors allege Yoon ordered the materials seized and Park suspended.

Yoon's Legal Record

On December 3, 2024, Yoon declared martial law in South Korea, but parliament invalidated the decision hours later. Lawmakers impeached Yoon on December 14, and he was arrested in January 2025 and formally charged with insurrection. The Constitutional Court removed him from office in April 2025. In January 2026, Yoon received a five-year prison term for obstructing arrest, and in February he was sentenced to life in prison for insurrection. In April the first sentence was increased to seven years, and in July he received another conviction for spreading false information during an election campaign.