Analysis of commercial satellite imagery of North Korea's Punggye-ri nuclear test facility suggests that Pyongyang may be preparing to carry out the country's sixth overall nuclear test.
Taken on 24 March the images indicate the presence of possibly four or five vehicles or trailers at the entrance to the North Portal, the site of North Korea's past four nuclear tests, according to a 25 March report published by the 38 North website of the US-Korea Institute at Johns Hopkins University's Paul H Nitze School of Advanced International Studies.
"If these vehicles are related to test preparations, they could be involved in the installation of instrumentation or even a nuclear device," according to the report.
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