Yoon’s brief, ill-fated imposition of martial law on Dec. 3 led to his indictment on charges that he directed a rebellion, which is punishable by life imprisonment or death.

Former South Korean President Yoon Suk Yeol was back in a solitary jail cell on Thursday with basic food and a khaki prison uniform after prosecutors secured a new detention warrant over his bid to im...

Former South Korean President Yoon Suk Yeol returned to jail on Thursday after a court approved a warrant sought by prosecutors investigating his attempt to impose martial law last year.