Yonhap news agency says South Korean prosecutors have indicted the impeached President Yoon Suk Yeol over his imposition of martial law.

The jailed president Yoon Suk Yeol, who had been holed up in his presidential compound for weeks after issuing a martial law decree last month, now faces rebellion charges punishable by the death penalty or life in prison.

Impeached South Korean President Yoon Suk Yeol was indicted for his martial law declaration that plunged the country into political turmoil, with prosecutors accusing him of being a "ringleader of insurrection".