A special parliamentary committee investigating President Yoon Suk Yeol's martial law bid failed Wednesday to hold an on-site hearing at a detention center against former Defense Minister Kim Yong-hyun as he refused its request to attend.

Prosecutors indicted detained South Korean President Yoon Suk Yeol on Sunday on charges of leading an insurrection with his short-lived imposition of martial law last month.

The Constitutional Court is separately deliberating whether to formally dismiss Yoon Suk Yeol as president or reinstate him. Yoon was impeached and suspended by the assembly last month.

Prosecutors assert that President Yoon Suk Yeol directed officials to cut off the supply of electricity and water to left-leaning news organizations that had criticized his administration.

The parliamentary committee investigating President Yoon Suk Yeol's short-lived imposition of martial law failed to convince either Yoon or his former Defense Minister Kim Yong-hyun to attend hearings held at their detention facilities on Wednesday.

Parliamentary hearing on Yoon's insurrection allegations Kwak Jong-keun, former chief of the Army Special Warfare Command, answers a question from a lawmaker at the National Assembly in Seoul on Feb.

An opposition-led parliamentary committee issued orders Tuesday to bring impeached President Yoon Suk Yeol and three others involved in his martial law declaration to appear at the National Assembly as witnesses.