N. Korea camouflages nuclear test site: Report

SEOUL (AFP) - North Korea has covered the entrance to a tunnel at its nuclear test site in an apparent effort to avoid satellite monitoring ahead of a widely expected detonation, a report said on Friday.

The Punggye-ri site, which has three tunnel entrances and multiple support buildings, has been closely monitored by US, South Korean and Japanese intelligence since North Korea ramped up its test threats just over a week ago.

"Analysis showed a camouflage net looking like a roof was placed on the tunnel entrance," Yonhap News Agency cited a senior South Korean government source as saying.

"The move seems to be aimed at keeping nuclear test preparations - now near their completion - from being exposed outside," the source said.