South Korea’s impeached president, Yoon Suk Yeol, was detained in a major law enforcement operation at the presidential compound Wednesday, defiantly insisting the anti-corruption agency didn’t have the authority to investigate his actions but saying he complied to prevent violence.

South Korea's anti-corruption agency detains impeached President Yoon Suk Yeol over his brief declaration of martial law.

Once a celebrated anti-corruption crusader, Yoon became South Korea’s first sitting president to be arrested on Wednesday.