North Korean leader Kim Jong-un has announced that his country will suspend nuclear and missile tests immediately, according to state media.
The announcement on Saturday came amid increasingly decreasing tensions on the Korean Peninsula in advance of a landmark summit between North and South Korea next week.
The official Korean Central News Agency (KCNA) said that Pyongyang would also close its nuclear test site as part of the country's efforts to pursue economic growth and regional peace.
"Nuclear development has proceeded scientifically and in due order and the development of the delivery strike means also proceeded scientifically and verified the completion of nuclear weapons," the agency quoted Kim as saying during a meeting of the ruling party's full Central Committee.
"We no longer need any nuclear test or test launches of intermediate and intercontinental range ballistic missiles, and because of this the northern nuclear test site has finished its mission."
According to the KCNA statement, North Korea also pledged to join international efforts to stop all nuclear tests and vowed to never use nuclear weapons as long as there are no such threats towards the country.
"The North appears to be signalling now, through its state news agency, that it is shifting its focus from the nuclear weapons development to more of an economic policy," Kathy Novak, reporting from South Korea's capital, Seoul, said.
Last year, after conducting its most powerful nuclear test ever and saying it had successfully tested its first intercontinental ballistic missile, North Korea announced that its nuclear programme was complete, added Novak.