Sky News: Iran says Israel, US killed scientist An Iranian nuclear scientist has been killed by a car bomb that Tehran immediately blamed on Israel and Washington, worsening a tense international stand-off over its atomic program. The White House denied any involvement. Iranian Vice President Mohammad Reza Rahimi told state television that Wednesday's murder of Mostafa Ahmadi Roshan would not stop Iran making 'progress' in its nuclear activities. Iranian officials noted the assassination method - two men on a motorbike attaching a magnetic bomb to the target's vehicle - was similar to that used in the killings of three other scientists over the past two years. Parliament erupted with yells of 'Death to Israel' and 'Death to America' after Wednesday's attack.