UN Council member says there was nuclear test in N. Korea

VIENNA - An international nuclear test monitoring agency said on Tuesday that it had detected an "unusual seismic event" in North Korea, following weeks of speculation that a nuclear test was imminent in the country.
"We have detected an unusual seismic event in North Korea," said Annika Thunborg, a spokeswoman for the Comprehensive Nuclear-Test Ban Treaty Organization, an agency set up to monitor compliance with a ban on nuclear tests that has yet to come into effect.
The Vienna-based CTBTO said on Twitter that "our analysts are currently studying data."