Iran says the assassination of one of its nuclear scientists in Tehran will not stop the progress of its nuclear program, in the fourth attack targeting an Iranian nuclear physicist in two years.
Calling the assassination "evidence of [foreign] government-sponsored terrorism," Vice President Mohammad Reza Rahimi told state television that the attack makes Iran's "scientists more determined than ever in striding towards Iran's progress."
Two men on a motorcycle reportedly attached a magnetic bomb on the car of nuclear scientist Mostafa Ahmadi Roshan as he drove in northern Tehran early on January 11, killing him when the bomb exploded moments later.
Roshan's driver/bodyguard later died of his wounds, while a third occupant of the car remains in hospital.
Iran's Atomic Energy Organization released a statement confirming Roshan was a nuclear scientist and calling his killing a "heinous act."
Fars News Agency said that Roshan, aged 32, supervised a department at Iran's uranium enrichment facility in Natanz, near Isfahan.
Tehran's deputy governor blamed the assassination on Israel.
Safar Ali Baratloo told media that "the bomb was a magnetic one and the same as the ones previously used for the assassination of [other] scientists and is the work of Zionists."
WATCH: The aftermath of the bomb attack in Tehran
Iran has frequently accused both Israel and the United States of killing nuclear scientists to weaken its nuclear program. Both countries deny the charges.
This latest assassination is the fourth since the start of 2010 targeting Iranian physicists.
In July 2011, an Iranian university student was shot dead by a motorcyclist in Tehran outside his daughter's kindergarten in what appeared to be a case of the assassin mistaking him for a physicist with an identical name.
In November 2010, a pair of back-to-back bombings killed one nuclear scientist and wounded another.
The wounded scientist, Fereidoun Abbasi, was later appointed as head of Iran's atomic agency.
And in January 2010, a bomb explosion killed a senior physics professor at Tehran University.
The assassinations accompany rising international tensions as Iran continues to enrich uranium despite UN calls for it to suspend the activity, which can be used to produce nuclear fuel or, at high levels of enrichment, fissile material for bombs.
The UN's nuclear watchdog, the International Atomic Energy Agency (IAEA) said on January 9 that Iran had started the production of uranium enriched up to 20 percent at its Fordow facility near the city of Qom, a site which had been kept secret until recently.
A 20-percent enrichment level is far beyond the 4-percent level needed for nuclear fuel but still short of the 90-percent level needed for nuclear warheads.
The United States and its allies say Iran is using its nuclear program as a cover to develop atomic bombs.
Both the United States and the European Union recently expanded sanctions against Iran over its nuclear program.
Iran says its nuclear program is entirely for peaceful energy purposes.
In a speech broadcast on state television on January 9, Iran's Supreme Leader Ayatollah Ali Khamenei said further sanctions imposed by the West would not make Iran change its nuclear course.
with agency reports
Copyright (c) 2012 RFE/RL, Inc. Reprinted with the permission of Radio Free Europe/Radio Liberty, 1201 Connecticut Ave., N.W. Washington DC 20036. www.rferl.org
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