The missile, Hwasong-8, performed to its technical targets
North Korea test-fired a newly developed hypersonic missile earlier this week, state news media KCNA reported on Wednesday, joining a race headed by major military powers to deploy the advanced weapons system.
North Korea fired the missile off its east coast towards the sea, South Korea's military said on Tuesday, as Pyongyang called on the United States and South Korea to scrap their "double standards" on weapons programs to restart diplomatic talks.
North Korea has been steadily developing its weapons systems amid an impasse over talks aimed at dismantling its nuclear and ballistic missile arsenals in return for US sanctions relief.
Unlike ballistic missiles that fly into outer space before returning on steep trajectories, hypersonic weapons fly towards targets at lower altitudes and can achieve more than five times the speed of sound - or about 6,200km per hour (3,853 miles per hour).
The North's hypersonic missile is at an early stage of development judged by detected velocity and other data, and would take a "considerable period of time" until it could be deployed in combat, the South's Joint Chiefs of Staff said on Wednesday.
The development of the weapons system increases North Korea's defence capabilities, KCNA said, describing the hypersonic missile as a "strategic weapon".
North Korean leader Kim Jong Un did not inspect the launch, according to the report.
The report said: "In the first test-launch, national defence scientists confirmed the navigational control and stability of the missile."
It said the missile, called Hwasong-8, performed to its technical targets "including the guiding manoeuvrability and the gliding flight characteristics of the detached hypersonic gliding warhead."
Next generation of arms
Hypersonic weapons are considered the next generation of arms that aim to rob adversaries of reaction time and traditional defeat mechanisms.
The test could mean the North is entering an accelerating race to deploy the weapon now involving the United States, Russia and China.
The United States on Monday said it had tested an air-breathing hypersonic weapon, marking the first successful test of the class of weapon since 2013.
In July, Russia successfully tested a Tsirkon(Zircon) hypersonic cruise, a weapon President Vladimir Putin touted as part of a new generation of missile systems without equal in the world.
Chang Young-keun, a missile specialist at the Korea Aerospace University, said the North's test of the hypersonic gliding vehicle (HGV) was likely a failure, given the flight was clocked at Mach 2.5, citing a reported assessment by South Korean military intelligence.
Chang said: "The North's HGV technology is not comparable to those of the US, Russia or China and for now seems to aim for short-range that can target South Korea or Japan."
North Korea last week said it was willing to consider another summit with the South if mutual respect between the neighbours can be assured, following South Korean President Moon Jae-in's call for a declaration to formally end the 1950-1953 Korean War.
The denuclearization negotiations, initiated between former US President Donald Trump and North Korean leader Kim Jong Un in 2018, have stalled since 2019.
The two Koreas both test-fired ballistic missiles on Sept 15, part of an arms race in which both nations have developed increasingly sophisticated weapons while efforts prove fruitless to get talks going on defusing tensions.