13 September 2017
South Korea confirms traces of radioactive gas from North Korea's nuclear test. The Nuclear Safety and Security Commission said its land-based xenon detector in the northeastern part of the country found traces of xenon-133 isotope on nine occasions. Its mobile equipment off the country's east coast detected traces of the isotope four times.
But it was unable to conclude whether the test had been for a hydrogen bomb as Pyongyang claimed. North Korea conducted its sixth nuclear test on September 3. U.N. Security Council step up sanctions with a ban on the textile exports and a cap on fuel supplies.