North Korea test-fired a newly designed air-defense missile system and staged a cruise missile strike drill on Wednesday, state media KCNA said.

The test confirmed the technical specifications and reliability of the new materials and multiple guidance modes used by the missile, as well as the system’s ability to identify and track targets. A sub-unit of the country’s long-range strategic cruise missile unit in the east struck a virtual airport target in the drill. The KCNA report appeared to confirm a South Korean Defense Ministry statement that Pyongyang fired multiple missiles toward the sea from the Sondok area on the east coast, the fourth North Korean weapons launch in a month.