- How it happened: Mostafa Roshan was being taken to work when two people on a motorcycle attached a magnetic bomb to the side of his car, which then exploded. Roshan was killed in the blast, and his driver suffered fatal wounds. Roshan, the deputy director of commerce for the Natanz uranium enrichment facility, was likely targeted for his prominent role in the facility, which is at the center of a major controversy over what the U.S. sees as a push by Iran to create nuclear weapons. Roshan, in his role, would likely have been in charge of procuring materials to build nuclear fuel. The U.S. has denied any role in his death. source