RADIOACTIVE gas has been seen coming from North Korea after tubby dictator Kim Jong-un successfully tested a hydrogen bomb.
South Korean observers first raised the alarm after they found traces of xenon-133 isotopes on nine separate occasions while equipment off the nation’s coast detected the substance four times.
Choi Jongbae, executive commissioner, said: “It was difficult to find out how powerful the nuclear test was with the amount of xenon detected, but we can say that it was from North Korea.”
Xenon-133 is a colorless gas that is used in the operation of nuclear fission reactors.
The substance that was detected did not occur naturally and has been linked to North Korea’s nuclear tests in the past.
Tubster Kim recently celebrated the country’s latest H-bomb test, which sent shockwaves through the international community.
Pictures released by the communist state’s mouthpiece showed crowds of thousands waving off the weapons developers in Pyongyang.
Buses drove through the capital while adoring crowds waved them off following the successful test on September 3.
Kim later failed to make good on fears he would launch another missile or detonate his seventh nuke on the founding day celebrations in the secretive nation.
The North’s top weapons scientists, however, headed back to their labs as the UN slapped new sanctions on the country in a bid to strangle the regime.
It is understood that they will continue to work with numerous substances, including xenon-133.
But South Korea’s nuclear boffins have said the traces detected would have no impact on South Korea’s environment and population.