North Korea Hiding Entrance to Nuclear Site

Reclusive regime doesn't want anyone peaking

North Korea has concealed the entrance to an underground nuclear site to prevent satellite monitoring, according to South Korean intelligence sources.

Imagery of the Punggye-ri nuclear test facility in North Hamgyong Province seen by the South Korean officials suggests that covers have been placed over a tunnel entrance.

There is widespread international concern at North Korea's threat to attempt a nuclear detonation - its third since 2006.

Both South Korea and the US are reported to have repositioned intelligence monitoring assets to gain a clear a picture as possible of Pyongyang's intentions.