The FBI has foiled four plots by gangs in Eastern Europe to sell nuclear material to ISIS in the last five years, an investigation has revealed.
Authorities working with the federal law enforcement agency have stopped criminals with Russian connections that sought to sell radioactive substances to the Middle Eastern extremists.
The latest known case came in February this year, when a smuggler offered a huge cache of deadly cesium – enough to contaminate several city blocks – and specifically sought a buyer from the Islamic State group.