South Korea's impeached President Yoon Suk Yeol refused to be questioned by investigators on Monday under a probe into whether he committed insurrection, as dozens of his supporters faced being charged over a violent rampage on a court building.

SEOUL (Reuters) - A South Korean court has approved a request for a detention warrant to be issued for arrested President Yoon Suk Yeol, the Seoul Western District Court said on Sunday.

South Korea's impeached President Yoon Suk Yeol had his mug shot taken and underwent a physical check before spending his first night in jail as a criminal suspect, a prison officer said Monday.