As of October 2023, there are no reports indicating that South Korean President Yoon Suk-yeol has been impeached or is facing arrest over a martial law declaration. President Yoon has been serving since May 2022 and continues to lead the nation. For the most accurate and up-to-date information, please refer to reputable news sources.
Reference(s):
Live: South Korean authorities attempt to arrest impeached president
cgtn.com