This is reported by "Ronhap" with reference to the Central Telegraph Agency of Korea (CTAC).
"The next exercises on delivering a fire strike were carried out in order to test the ability of the front-line long-range artillery units to suddenly launch a military counterattack," the report said.
As noted, Kim Jong-un expressed "great satisfaction" with the result of the exercises, urging the unit "to go in the direction of further strengthening artillery training."
Earlier, Japanese Prime Minister Shinzo Abe said that the new DPRK missile launches did not harm Japanese ships and aircraft.
On March 9, Seoul announced the launch of the DPRK of three shells in the direction of the Sea of Japan.