A mysterious explosion at a Russian weapons testing site earlier this month released various radioactive isotopes, creating a cloud of radioactive gases that swept across a nearby town. A Norwegian nuclear expert said that the isotopes – of strontium, barium, and lanthanum – were caused by a “nuclear chain reaction,” saying it was evidence that it “was a nuclear reactor that exploded.”
In the aftermath of the explosion, Russia’s explanation of the accident and its risks varied, several nuclear monitoring stations in Russia mysteriously went offline, doctors treating the wounded said that they were forced to sign nondisclosure agreements and that hospital records were destroyed, and one doctor was found to have a radioactive isotope in his muscle tissue. Russia has insisted that the cesium-137 detected was the result of something the doctor ate.
Source: Business Insider