Japan confirms North Korea tremors were due to nuclear weapon test

This is the sixth atomic test by Pyongyang since 2006

Japan has concluded that the tremors detected in North Korea were a nuclear explosion, marking the sixth atomic test by Pyongyang since 2006.
 

"After examining the data we concluded that it was a nuclear tests," Foreign Minister Taro Kono said at a briefing broadcast by public broadcaster NHK following a meeting of Japan's National Security Council.
 

Japan's Ministry of Defence said it had dispatched at least three military jets from bases in Japan to test for radiation.