tokio - The Japanese government assumes that North Korea has held a nuclear test, the sixth by Pyongyang since 2006. Foreign Minister Tero Taro Kono announced Sunday after a Japanese National Security Council emergency meeting.
The Japanese Ministry of Defense stated that aircraft from Japan have gone up from Japan to measure any possible radiation.
The signals that indicated a possible nuclear test were two earthquakes, which were recorded at low depths north-northwest of Kimchaek on Sunday shortly after each other. This is an area in which North Korea has previously held nuclear tests.
North Korea already caused increased tensions by flying a rocket over Japan last week. The North Korean press office KCNA announced at the weekend that leader Kim Jong-un had watched a hydrogen bomb on a new intercontinental missile during a visit to the National Nuclear Army Institute.