Iranians attend the funeral of chemistry scientist Mostafa Ahmadi Roshan

Iranians carry the coffin of chemistry scientist Mostafa Ahmadi Roshan, who was killed in a car bomb blast, in Tehran, Iran, on January 13, 2012. The nuclear scientist was killed in a car bomb on January 11th when a motorcyclist attached a magnetic bomb on the car. UPI/Maryam Rahmanian