TOKYO (Sputnik) — Earlier in the day, South Korean media reported an earthquake near the North Korean nuclear facility, prompting Seoul's suspicions that Pyongyang had performed another nuclear test. Later, North Korea confirmed that it had indeed tested a hydrogen bomb, which it said was a success.
According to Kyodo news agency, Kawasaki T-4 trainer aircraft, equipped with special devices to collect atomic dust is being prepared at the airbase in the northern Japanese prefecture of Aomori to conduct monitor flights in the region.
Earlier in the day, South Korean media, citing the country's intelligence service, put into question the test of the hydrogen bomb because of low explosion yield.
On December 10, North Korean leader Kim Jong Un said that the country had a hydrogen bomb and was ready to use it to protect its sovereignty.