Kim Jong-un, top leader of the Democratic People's Republic of Korea, oversaw the test-fire of the newly developed submarine-launched strategic cruise missile "Pulhwasal-3-31" on Sunday, the official Korean Central News Agency reported on Monday.

The DPRK navy test-fired two cruise missiles that flew above the eastern waters for 7,421 seconds and 7,445 seconds respectively before hitting the island target, the report said. The test-fire had no impact on the security of any neighboring country and had nothing to do with the regional situation, it said.