Bomb kills Iran nuke expert, Israel accused

TEHRAN, Iran — Two assailants on a motorcycle attached a magnetic bomb to the car of an Iranian university professor working at a key nuclear facility, killing him and wounding two people on Wednesday, a semiofficial news agency reported.

The attack in Tehran bore a strong resemblance to earlier killings of scientists working on the Iranian nuclear program. It is certain to reinforce authorities’ claims of widening clandestine operations by Western powers and allies to try to cripple nuclear advancements.