By Jeremy Herb - 01/16/12 09:58 PM EST
Iran’s state news service, the Islamic Republic News Agency, said the killers had been identified.
Iranian nuclear scientist Mostafa Ahmadi Roshan was killed last week in Tehran after a motorcyclist placed a bomb under his car, the latest in a series of assassinations of Iranian nuclear officials in the past two years.
Senior U.S. officials have categorically denied any role in the assassination, while Israeli officials have not issued similar denials.
The United States, Israeli and other Western allies say Iran is trying to develop a nuclear weapon, while Iran says its nuclear program is for peaceful purposes like energy production.