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

President Yoon Suk Yeol has been in custody since being arrested last week over his brief declaration of martial law in December.

Lawyers for South Korea's impeached president say he will appear at a hearing in a Seoul court to oppose a formal arrest over last month's imposition of martial law.

South Korea's impeached President Yoon Suk Yeol has been charged with insurrection after he attempted to declare martial law in December. His ill-fated attempt to impose military rule plunged the country into an unprecedented political crisis and he becomes the first sitting president in South Korean history to be charged with a crime.

Prosecutors in South Korea have indicted impeached President Yoon Suk Yeol in connection to insurrection charges. South Korea’s parliament voted to impeach Yoon last month after he briefly declared martial law and thrust the country into chaos.

President Yoon Suk Yeol will stand trial along with his former defense minister and others who participated in his short-lived imposition of martial law.

South Korean President Yoon Suk Yeol has become the country’s first leader to be indicted, less than two weeks after he was the first to be detained