Quake recorded near North Korea's nuclear test site

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South Korea's spy agency said recently the North was readying possibly two more tunnels following its latest test, according to ruling Democratic Party lawmakers who had been briefed on the issue.

The quake took place at 16.41 UTC (5.41am NZT) at a depth of 5km, the US Geological Survey reported. The authorities added that the epicentre of the quake was located north of the Punggye-Ri testing site.

North Korea's last nuclear test on September 3 caused a 6.3 magnitude natural disaster, according to the USGS. The U.S. Geological Survey says the quake was detected some 23 kilometers north-east of the Punggye-ri Test Site, but it has yet to confirm whether it was a natural or a man-made tremor.

Friday's quake was a magnitude 2.7 with a depth of 3 km in North Hamgyong Province in North Korea, the Korea Meteorological Administration said.

And now the latest natural disaster to hit the region suggesting the detonations have dramatically destabilised the area.

South Korea's weather agency says the four quakes likely occurred because the underground nuclear explosion September 3 weakened or affected the tectonic plate structures in the area.

September's nuclear test was so strong that it shook buildings in Russian Federation and China and was described as a "perfect success" by North Korea's state-run media. Following the tremor, the United Nations Security Council had unanimously adopted tough new sanctions against Pyongyang. These disturbances are more numerous and widespread than seen after any of the North's previous tests, 38 North said. In 2006, North Korea's first detonation triggered a 4.1-magnitude quake.

In September, Trump used his maiden speech to the UN to threaten to "destroy" the nuclear-armed nation if Kim did not back down, referring to him as "Rocket Man".

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