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

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 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.