North Korea has successfully developed a new ballistic control system for a multiple rocket launcher along with controllable shells, state media KCNA reported on Monday.

The Academy of Defense Science, which oversees the country's missile development, conducted a "ballistic control" test firing of 240-mm caliber controllable multiple rocket launcher shells on Sunday, KCNA said.

The U.S. and its allies have criticized North Korea’s missile launches.

North Korea accuses the U.S. and South Korea of escalating tensions with their large-scale military drills.