Reports say the two countries are trying to determine if the communist nation is planning a second test detonation. One South Korea official said a second nuclear test by North Korea is "not believed to be imminent."
The Yonhap news agency reported that Seoul and Washington are keeping a close watch on the movement of trucks and soldiers at the Punggye-ri site in North Korea's remote northeast.
The "JoongAng Ilbo" newspaper reported that South Korea has detected a new building being erected at the site.
The South Korean Defense Ministry said it could neither confirm nor deny the reports. The United States declined comment.
(AP)
The Yonhap news agency reported that Seoul and Washington are keeping a close watch on the movement of trucks and soldiers at the Punggye-ri site in North Korea's remote northeast.
The "JoongAng Ilbo" newspaper reported that South Korea has detected a new building being erected at the site.
The South Korean Defense Ministry said it could neither confirm nor deny the reports. The United States declined comment.
(AP)
