South Korea calls national security meeting after earthquake of magnitude 6.3 detected near a North Korea nuclear test area
Melissa Davey signing off from Melbourne and handing this live blog over to my UK colleague Nicola Slawson. Thanks for following the latest developments with us – here’s what we know so far:
It sounds like the second tremor reported, initially thought to be another nuclear test, was a structural collapse in the aftermath of the first explosion. Possibly a tunnel collapse, reports say.
USGS on 2nd quake: “significantly smaller event is likely a secondary feature (possibly a structural collapse) associated with larger event" https://t.co/8efWEtp5cO
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