Satellite images show activity at North Korea nuclear test site


An increase in activity at North Korea's nuclear test site could signal preparations for a new test or a collection of data from its last one, a US-based monitoring group said on Friday, citing satellite images.

The 38 North group, run by Johns Hopkins University's School of Advanced International Studies, said there was activity at all three tunnel complexes at the Punggye-ri nuclear test site involving a large vehicle and personnel.

"One possible reason for this activity is to collect data on the Sept. 9 test although other purposes cannot be ruled out, such as sealing the portal or other preparations related to a new test," the group said, referring to the last nuclear test.

The North is believed to be ready for another nuclear test at any time and there has been speculation it could mark the Oct. 10 anniversary of the founding of its Workers' Party with another underground detonation.