South Korea’s former defense minister tried to kill himself shortly before he was formally arrested over his role in this month’s martial law operation.

Axar.az reports that citing AFP, President Yoon Suk Yeol declared martial law on December 3 and sent soldiers and helicopters to parliament but was forced to rescind the decree hours later after lawmakers voted it down.

Defense minister Kim Yong-hyun resigned last Thursday and was formally arrested Tuesday on charges including “engaging in critical duties during an insurrection” and “abuse of authority to obstruct the exercise of rights.”

During a parliamentary hearing, the commissioner general of the Korea Correctional Service said the former minister tried to kill himself minutes before his arrest was announced.

Shortly before midnight (3:00 p.m. GMT Tuesday), “former Minister of Defense Kim Yong-hyun attempted suicide at the Seoul Dongbu Detention Center,” said Shin Yong-hae, senior prisons official.

Adding that he received the report Wednesday morning, Shin said Kim had tried to kill himself in the toilet using a string from his clothing.

“A control room staff member intervened, and when they opened the door, he immediately gave up the attempt,” said Shin.

Kim had issued an apology on Tuesday, saying through his lawyers that “all responsibility for this situation lies solely with me.”

He “deeply apologized” to the South Korean people and said that his subordinates were “merely following my orders and fulfilling their assigned duties.”