According to the ratification of the KPA General Staff, the units and sub-units in charge of the southwest coastal defence of the 4th Corps of the KPA on January 6 conducted a deceptive operation simulating shelling and on January 7 performed a naval live-shell firing drill in four areas in the eastern direction parallel to the Military Demarcation Line in sea waters with 88 shells by mobilizing 23 coastal artilleries of five companies and three platoons of the coastal and islet defence detachments deployed in the section from Tungam-ri, Kangryong County to Yonan County.

The naval live-shell firing district is not related to the Military Demarcation Line in terms of direction, and any intentional threat was not exposed to an enemy state.

The naval live-shell firing drill in the southwest waters was conducted according to a plan within the regular training system of the KPA.