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

South Korean prosecutors charged President Yoon Suk Yeol for his failed attempt last month to place the country under martial law, forcing the impeached leader to remain in detention as they build a case against him.

Impeached South Korean President Yoon Suk Yeol was indicted for insurrection on Sunday, an unprecedented development in weeks of political and legal crisis since his short-lived martial law attempt stunned the nation.