Nuclear accident sends 'harmless' radioactive cloud over Europe

French institute says pollution suggests release of nuclear material in Russia or Kazakhstan in SeptemberA cloud of radioactive pollution over Europe in recent weeks indicates that an accident happened in a nuclear facility in Russia or Kazakhstan in the last week of September, French nuclear safety institute IRSN has said. The IRSN on Thursday ruled out an accident in a nuclear reactor, saying it was likely to be in a nuclear fuel treatment site or centre for radioactive medicine. There has bee