Investigators raided the home and office of former Defense Minister Song Young-moo and the defense ministry headquarters Friday over suspicions of abuse of power.
Song, who served under the Moon Jae-in administration, is accused of forcing then senior ministry officials to make and endorse documents refuting a media report that he had said a controversial contingency martial law plan authored by the previous Park Geun-hye government "legally had no problem."
The martial law plan was drawn up when Park faced impeachment in 2017.
The Corruption Investigation Office for High-ranking Officials sent investigators to the residences and offices of Song, one of his former aides, a former ministry spokesperson and the defense ministry to seize evidence, officials said.
Officials said they will summon Song and others for re-questioning after analyzing seized evidence.
Source: Yonhap News Agency