South Korean investigators on Thursday requested a court warrant to arrest the wife of jailed former President Yoon Suk Yeol, a day after questioning her over suspicions including bribery, stock manipulation,

Lawyers for the former president argued that arresting someone who was already in detention went against both logic and legal precedent.

South Korea's former first lady Kim Keon Hee apologised on Wednesday and called herself "a nobody" as she appeared for questioning by investigators on a string of corruption charges that plagued her husband's term before it ended abruptly.