South Korean prosecutors on Sunday indicted impeached President Yoon Suk Yeol on rebellion in connection with his short-lived imposition of martial law, a criminal charge that could incur the death penalty or life imprisonment if convicted.

South Korea hit another political milestone on Sunday, as impeached President Yoon Suk Yeol became the country’s first sitting president ever to be indicted.

South Korean President Yoon Suk Yeol has been indicted over the imposition of martial law, leading to political unrest. Prosecutors have charged Yoon with rebellion related to his controversial decree aimed at curbing liberal influences in the National Assembly.