Page "History of North Korea" Paragraph 39

North Korea declared on February 10, 2005 that it has nuclear weapons bringing widespread calls for the North to return to the six-party talks aimed at curbing its nuclear program.

It was initially disputed by outside sources whether or not North Korea has nuclear weapons, and many Russian sources denied that North Korea has the technology necessary to build a nuclear weapon.

On Monday, October 9, 2006, North Korea has announced that it had successfully detonated a nuclear device underground at 10: 36 am local time without any radiation leak.

An official at South Korea's seismic monitoring center confirmed a magnitude-3. 6 tremor felt at the time North Korea said it conducted the test was not a natural occurrence.

Associated Press