An “explosion” measuring 6.3 magnitude was detected in North Korea Sunday after Pyongyang said it had developed an advanced hydrogen bomb that possessed “great destructive power”.
South Korea and Japan said the North may have conducted a sixth nuclear test, according to reports from the Blue House and Kyodo.
South Korea’s Joint Chiefs of Staff said the seismic event was “artificial”.
The US Geological Survey said the explosion struck 55 km north northwest of Kimchaek, with an epicentre 10 km deep. It initially gave it a magnitude measurement of 5.6.
There were no immediate reports of damage or casualties.
