South Korea's presidential security chief resigned Friday as he faced questioning over why his guards prevented the detention of impeached President Yoon Suk Yeol, and as investigators prepared to make a fresh arrest attempt.

Park sought to address public concerns about the standoff between investigators and Yoon's presidential security team.

South Korean opposition parties introduced a bill Thursday calling for an independent investigation into impeached President Yoon Suk Yeol’s brief martial law declaration.