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

Impeached South Korean President Yoon Suk Yeol was arrested and questioned for hours by investigators in relation to a criminal insurrection probe, ending a weeks-long standoff with authorities.

Yoon Suk Yeol, who is facing insurrection charges after his effort to impose martial law last month, becomes the first South Korean president to be detained while in office.