Media from South Korea (Korea) Chosun Ilbo reported, the information in preparation for North Korea nuclear test came from the South Korean government itself. Predicted North Korea would conduct a nuclear test in the City of Punggye-ri.
On 8 April, the South Korean government to see the underground tunnels made by the North via satellite photos. The tunnel near nuclear test sites.
"Apparently, North Korea established its nuclear installations under the soil and pile," said the South Korean government, told AFP on Saturday (04/21/2012).
Since 2011 then, South Korea and the United States (U.S.) appear to oversee underground locations of the North. These places are generally covered by sand, soil, and rocks.
Until now, North Korea is believed to have enough plutonium to make six to eight atomic bombs. The communist country also has tested atomic weapons in 2006 and 2009. After the trial was held, North and South Korea remain silent for three months.
North Korea also pledged to re-launch its satellites, since the previous satellite failed to enter orbit and fell into the sea.
