Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK), on Sunday visited a major munitions industry enterprise to review the production of weapons and combat equipment, according to the Korean Central News Agency (KCNA).

Kim said a new multiple-rocket system would be "used in large quantities for concentrated attack in military operations," the agency reported.

Noting the system will be the primary strike capability, Kim called for a "revolution in upgrading the artillery weapon system," it added.