South Korea’s jailed former President Yoon Suk Yeol refused questioning by investigators on Friday by removing his prison uniform and lying on the floor of his cell.

Yoon, ousted in April for declaring martial law, is on trial for rebellion and faces further investigations into election-related misconduct involving him and his wife.

Despite a court-issued warrant, investigators did not forcibly remove him due to safety concerns.

Yoon’s legal team cited health issues as the reason for noncompliance, while critics say his actions undermine the rule of law, CBS News has reported.

The probe is being led by special counsel Min Joong-ki, appointed by current President Lee Jae Myung.

Written by B.C. Begley