Satellite images suggest “significant activity” is taking place at a North Korean laboratory that could separate plutonium for nuclear weapons.
The photos appear on 38 North, a US website that monitors sensitive sites in the country.
The website says that during the past five weeks exhaust plumes have been seen two or three times at the radiochemical laboratory complex at Yongbyon. It suggests buildings there are being heated, but it is unclear why.
Analysis by satellite imagery specialists William Mugford and Joseph Bermudez says: “The plumes suggest that the operators of the reprocessing facility are heating their buildings, perhaps indicating that some significant activity is being undertaken, or will be in the near future. Whether that activity will be additional separation of plutonium for nuclear weapons remains unclear.”
The lab is where North Korea separates weapons-grade plutonium from nuclear reactor waste.