North Korean leader Kim Jong Un observed the test firing of a new type of tactical guided weapon aimed at boosting the country's nuclear capabilities, the North's KCNA state news agency reported on Sunday.
The report comes amid signs North Korea could soon resume nuclear testing according to South Korean and US officials and after Kim broke a self-imposed moratorium on intercontinental ballistic missile (ICBM) testing with a launch last month.
South Korea's military said on Sunday it had detected two projectiles launched on Saturday from the North's east coast towards the sea. The projectiles flew about 110 km with an apogee of 25 km and maximum speed of less than Mach 4, indicating they were short-range missiles.
The KCNA report gave no details on the launch but linked it to the North's nuclear objectives.
"The new-type tactical guided weapon system ... is of great significance in drastically improving the firepower of the frontline long-range artillery units and enhancing the efficiency in the operation of tactical nukes," KCNA said.
It said Kim "gave important instructions on further building up the defence capabilities and nuclear combat forces of the country".
North Korea has been developing short-range ballistic missiles (SRBMs) that analysts say are designed to evade missile defences and strike targets in the South.
On April 5, Kim Yo Jong, the powerful sister of leader Kim, said North Korea opposes war but would use nuclear weapons to strike South Korea if attacked, in a warning seen aimed at the South's incoming conservative president, Yoon Suk-yeol.
Yoon spokesperson Bae Hyun-jin said there was nothing new or surprising in the North's "show of force" as a new administration comes in.
President Moon Jae-in, who will leave office on May 10, has received real-time briefings on the North's missile launch, his office said.