BBC: N Korea ready for another nuclear test, says South
South Korean officials have said North Korea could be ready to conduct another nuclear test at any time.
The North conducted its fifth underground nuclear test on Friday, thought to be its most powerful yet.
A defence ministry spokesman said there was still an unused tunnel at the Punggye-ri test site which could be used for a sixth explosion at any time.
Friday's widely condemned test has ratcheted up tension and led to fierce rhetoric from South Korea.
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More News On South Korean reports That North Korea Is Preparing Another Nuclear Test
North Korea ready for another nuclear test: Yonhap -- Reuters
Seoul says North Korea capable of another nuclear test -- AP
N. Korea ready to conduct another nuclear test: Seoul -- AFP
North Korea Preparing for Another Nuclear Test, Yonhap News Says -- Bloomberg
North Korea ready for nuclear test 'at any time' after South warns it would reduce Pyongyang 'to ashes' -- Mirror