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,

The probe against Yoon Suk Yeol's wife comes while he remains in detention. If the arrest warrant is granted, it will be the first time in South Korea that a former president and first lady were both arrested.

The investigation is one of three separate probes launched under Seoul’s new liberal government targeting the presidency of Yoon.

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

South Korea’s impeached former president Yoon Suk Yeol has once again defied investigators. This time, by reportedly refusing to cooperate while lying down in his prison cell, dressed only in underwear.

South Korean prosecutors have sought an arrest warrant for Kim Keon Hee on allegations of bribery, stock manipulation and political influence linked to her husband's case.

South Korea's jailed ex-President Yoon Suk Yeol again refused to attend questioning by investigators Friday, using a new method to resist: He took off his prison uniform and lay down on the floor at his detention room.

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.