Pyongyang says new warhead designed for cruise missiles, adding that a new anti-aircraft rocket was also tested.

“The DPRK Missile Administration has conducted a power test of a super-large warhead designed for ‘Hwasal-1 Ra-3’ strategic cruise missile”, KCNA news agency reported on Saturday, referring to North Korea by an abbreviation for its official name – Democratic People’s Republic of Korea.

North Korea also carried out a test launch on Friday afternoon of a “Pyoljji-1-2”, which state media said was a “new-type anti-aircraft missile”.

KCNA added that “a certain goal was attained” through the test without providing further details.

The weapons tests were part of the “regular activities of the administration and its affiliated defence science institutes”, KCNA reported, referencing the operation of “new-type weapon systems”.

The tests “had nothing to do with the surrounding situation”, KCNA added, but did not give any further information.

In early April, North Korea said it had tested a new medium-to-long-range solid-fuel hypersonic missile, with state media sharing a video of it being launched as leader Kim Jong Un looked on.

Cruise missiles are among a growing collection of North Korean weapons designed to overwhelm regional missile defences. They supplement the North’s vast arsenal of ballistic missiles, including intercontinental variants, which are said to be aimed at the continental United States.

Analysts say anti-aircraft missile technology is an area where North Korea could benefit from its deepening military cooperation with Russia, as the two countries align in the face of their separate, intensifying confrontations with the US.

The US and South Korea have accused the North of providing artillery shells and other equipment to Russia to help extend its warfighting ability in Ukraine.

Since its second nuclear test in 2009, Pyongyang has been under heavy international sanctions, but the development of its nuclear and weapons programmes has continued unabated.