China earthquake centre reports that the 3.4 magnitude earthquake hit the North Hamgyong province of North Korea at 8.30am GMT. They say the quake is believed to have been caused by a suspected explosion and was detected in the same location as previous nuclear tests. The state's media reports the rumble was detected on the Earth's surface – citing a depth of 0km. This comes as US President Donald Trump and Kim traded terrifying insults and threatened to annihilate each other's countries this week.

GETTY TERRIFYING: A huge 3.4 magnitude earthquake has hit North Korea

Atomic bombing of Japan 70 years on The atomic nuclear bombing of Hiroshima and Nagasaki in Japan left behind destruction, devastation and aided the end of the second World War in 1945. Now 70 years on we look at the devastation and how it looks now 1 / 27 Getty Images The mushroom cloud of the first atomic bomb over Nagasaki, Japan, 9 August 1945

“Analysts looking at unusual seismic activity” Lassina Zerbo Trump shocked the UN by announcing he would destroy North Korea's regime if they did not stop with their nuclear missile programme. But Kim hit back, calling Trump "mental" and brazenly suggesting the UN speech showed he was doing the right thing in developing the nukes. Just last night Trump made a threatening speech last night in Alabama – denouncing "rocket man" Kim and saying military action is possible.

GETTY INSULTS: Donald Trump and Kim Jong-un have traded insults this week

Chillingly, hours after this speech the earthquake was detected and raised fears that Kim had gone and dropped a hydrogen bomb anyway. Just last week there was fears of an imminent test with intense activity spotted at the Punggye-ri base from satellite imagery. Head of nuclear test monitoring agency CTBTO is working out if it was a nuclear test.

"Analysts looking at unusual seismic activity of a much smaller magnitude in the DPRK," Executive Secretary Lassina Zerbo said in a Twitter post, adding more details were set to emerge later. Previous quakes from North Korea have indicated nuclear tests by the reclusive state, the most recent earlier this month. South Korea's weather agency said it was analysing the nature of the quake and its initial view was that it was natural.

Inside North Korea: The pictures Kim Jong-un doesn't want you to see Since 2008, photographer Eric Lafforgue ventured to North Korea six times. Thanks to digital memory cards, he was able to save photos that was forbidden to take inside the segregated state 1 / 62 Eric Lafforgue/Exclusivepix Medi Taking pictures in the DMZ is easy, but if you come too close to the soldiers, they stop you