Yoon, who was the first sitting South Korean president to be arrested, faces trial on charges of leading an insurrection over his attempt to impose martial law. During Wednesday's seven-hour hearing, a special counsel team argued for the arrest warrant on five key charges, South Korean news agency Yonhap reported.

Former South Korean President Yoon Suk Yeol was back in a solitary jail cell on Thursday after prosecutors secured a new detention warrant over his bid to impose martial law last year.

The special counsel, Cho Eun-suk, and his team of investigators had wanted to return Mr. Yoon to jail since they began their work last month.