Former South Korean Defense Minister Kim Yong-hyun has attempted to end his own life while in custody, the head of the country’s correctional service said Wednesday, as a political crisis from the President’s brief declaration of martial law continues to spiral.

Shin Yong Hae, commissioner general of the Korea Correctional Service, told lawmakers Wednesday that Kim Yong Hyun tried to kill himself the previous night at a detention center in Seoul. He said that

Former Defence Minister Kim Yong-hyun, a close confidant of Yoon, attempted suicide late Tuesday night. He is under arrest for insurrection.

South Korean President Yoon Suk Yeol said on Thursday he would "fight to the end" as his own political party shifted closer to voting with the opposition to impeach him over his short-lived martial law order that threw the U.

The president's statement came just hours before the main opposition party submitted a new impeachment motion against him.