Groundwater carries radiation risk for North Korean cities near nuke test site - rights group

Tens of thousands of North Koreans and people in South Korea, Japan and China could be exposed to radioactive materials spread through groundwater from an underground nuclear test site, a Seoul-based human rights group said in a report on Tuesday.

North Korea secretly conducted six tests of nuclear weapons at the Punggye-ri site in the mountainous North Hamgyong Province between 2006 and 2017, according to the U.S. and South Korean governments.