North Korea conducts ‘fifth and biggest nuclear test’

North Korea is believed to have carried out its fifth and largest ever test of a nuclear device, say South Korean military officials.
It comes after an “artificial” magnitude 5.3 earthquake was detected close to its nuclear test site on Friday morning, Previous artificial earthquakes in the same area and of that magnitude have all been nuclear tests.
There has been no comment from the North as yet.
In a statement carried by the Yonhap news agency, South Korea’s Joint Chiefs of Staff said: “We estimate the North has carried out the biggest-ever test.”