North Korea has conducted an underwater submarine-launched test of its new AI-guided torpedo system.

The new high-precision torpedo tracks targets and guides itself, the Korean Central News Agency (KCNA) reported on Saturday.

According to KCNA, the test of the new AI-guided torpedo was designed "to confirm the successful technical upgrade" of its weapons system.

"Artificial intelligence technology was applied to the target detection and guidance functions of the new-type superspeed precision-guided torpedo," the report said.

Underwater tests of the "superspeed" Zam-2.0 torpedo system had taken place days earlier.

The precision-guided torpedo test came three days after the North Korean military tested two other types of submarine-launched cruise missiles, following weeks of tensions with South Korea over a mine explosion on their border.

The tests confirmed "the core technology for improving the efficiency of the propulsion system and the performance of the rocket engine," the report said, adding that "more than 180 rounds of various tests have been conducted over the past five years."

Earlier this month, North Korea announced the launch of an AI-assisted intermediate-range hypersonic missile.

North Korea launches 2 ballistic missiles, dials up pressure on US

North Korea launches 2 ballistic missiles toward the sea while dialing up pressure on the United States.

Pyongyang sees constant upgrading of its advanced weapons systems alongside maintaining the readiness of its armed forces as a deterrent against possible aggression by belligerent powers.

It also considers its nuclear stockpile and missile arsenal as a deterrent against threats of a US invasion and occupation of the Korean peninsula.

Last month, Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, dismissed proposed denuclearization talks by the UN nuclear watchdog at the International Atomic Energy Agency’s (IAEA) 70th General Conference in Vienna, saying Pyongyang’s status as a nuclear weapons state is eternal and irreversible.

In a report run by KCNA, Kim's sister ridiculed the denuclearization talks proposed at the IAEA and described the suggested discussions as “familiar silly talk.”

She went on to shrug off rumors of US President Donald Trump making overtures for a return to Washington-Pyongyang peace talks by downscaling Washington-Seoul joint annual military exercises, saying that shortening the drills wouldn’t change the “provocative, aggressive nature” of the American military alliances in the region.