Police arrested at least 17 of the attackers. The liberal opposition party accused the president of encouraging the attack.

South Korea's impeached president, Yoon Suk Yeol, was formally arrested early Sunday, days after being apprehended at his presidential compound in Seoul, as he faces possible imprisonment over his ill-fated declaration of martial law last month.

A court in Seoul has extended the time South Korea's impeached president Yoon Suk Yeol will be detained over his botched attempt to impose martial law in the country last month. Citing concerns Yoon could destroy evidence if released,