Secretary General Kim Hyung-nam, right, and Director of the Center for Military Human Rights Korea holds a briefing at the Corruption Investigation Office for High-ranking Officials in Gwacheon, Gyeonggi Province, Dec. 9. Yonhap

Prosecutors on Monday raided the Defense Counterintelligence Command (DCC) as part of their investigation into alleged treason following President Yoon Suk Yeol's short-lived martial law imposition last week.

The prosecution's special investigation team sent prosecutors and investigators to the DCC headquarters in Gwacheon, just south of Seoul, in the morning to search for evidence related to the martial law enforcement on Dec. 3.

Military prosecutors also participated in the raid, and the search warrant was issued from the military court. The offices and residences of DCC commander Lt. Gen. Yeo In-hyung and other ranking command officials and the DCC's branch offices in Seoul and other areas nationwide were reportedly included in the raid.

The DCC is known as a key institution in Yoon's abrupt martial law declaration that lasted six hours before being withdrawn due to a National Assembly vote against it. At that time, the DCC sent troops and personnel to the National Assembly and the National Election Commission.

Yeo and two other DCC officials were suspended from their duties last week. (Yonhap)