North Korea has started building a fence around the site of its first-ever nuclear test, as U.S. and South Korean authorities speculated the move may be to monitor its effects and restoring the area, a news report said Sunday. South Korea's Yonhap news agency quoted an unidentified South Korean official as saying that the South has received intelligence that work is under way to erect a barbed wire fence near the nuclear site at Punggyeri in the northeastern county of Kilju where the North conducted the nuclear test detonation a year ago. The North was also boosting the number of personnel at the site, Yonhap said. South Korean and U.S. authorities presume that the move is aimed at analyzing the outcome of the test and restoring the site, as North Korea believes the area is now free from radioactive contamination, the official was quoted as saying. «Activities spotted at Punggyeri are usual» ones, another unidentified South Korean official said without giving any further details, according to Yonhap.
