The Democratic People’s Republic of Korea (DPRK) on November 23 fired some 30 artillery shells into waters off the west coast of the Korean peninsula near a tense maritime border.

The Republic of Korea (RoK)’s Joint Chiefs of Staff (JCS) said the RoK fired back in response, and the military is now put on a heightened alert, according to Yonhap News Agency.

Meanwhile, a spokesperson of the RoK Defence Ministry said that a DPRK artillery unit staged an illegal firing provocation at 2:34 p.m, local time (0534 GMT).

Apart from dozens of houses have been damaged, several residents and soldiers have also been injured, the RoK’s YTN television reported./.