North Korea quake prompt to explosion fears

The North Korea flag flutters
North Korea has been struck by a 3.4 scale earthquake, prompting fears of an explosion amid increased tensions on the peninsula.
Chinese seismic services detected the tremor at a depth of zero kilometres, at around 8.30 GMT on Saturday morning close to a known missile test site.
It initially reported that the tremor was a "suspected explosion", but South Korea's weather agency took the view that it was a naturally occurring phenomenon.

The incident comes amid heightened tensions in the Korean peninsula, and a day after Donald Trump publicly branded Korean leader Kim Jong Un a "rocket man", telling audiences that American "really had no choice" but to confront the Pyongyang regime.
The United States Geological Survey, which registered the blast at a depth of 5km, said it could not "conclusively confirm" whether the event was natural or man-made.
An official from Seoul's meteorological agency said the quake had been detected near where North Korea had recently conducted a nuclear test, but said it was clear it was not caused by an artificial explosion.
The tremor was detected near where North Korea recently conducted a nuclear testThe head of the Comprehensive Nuclear Test Ban Treaty Organisation, Lassina Zerbo, said the blast was 50km away from previous sites.
He said the agency's analysts were "looking at unusual seismic activity of a much smaller magnitude" in North Korea.
In the past earthquakes in North Korea have indicated nuclear tests by the nation, which is currently sparring with the United States over weapons capabilities.
The site of the tremor is close to where the regime on 3 September claimed to have detonated a thermonuclear weapon, in its sixth and most powerful nuclear test to date.
Donald Trump later used his speech to the UN General Assembly to tell the world he would "totally destroy" North Korea if the USA was threatened by its regime.
Korean leader Kim Jong Un branded the speech the "most ferocious declaration of war in history" and said he would consider the "highest level of hardline countermeasure" in response.
Tens of thousands of people reportedly joined an anti-America march in Pyongyang on Friday.
Commenting on their assessment of the quake, the South Korean official said "several methods" had been used to work out whether the incident was natural or manmade.
"A key method is to look at the seismic waves or seismic acoustic waves and the latter can be detected in the case of a manmade earthquake," they explained. "In this case we saw none."
All earthquakes caused by North Korea's previous nuclear tests registered at more than 4.3, and the latest caused landslides and, potentially, a secondary quake.


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