The UN Office of High Commissioner for Human Rights (OHCHR) has expressed sympathy with the family of the Iranian nuclear scientist assassinated in Tehran early in January.

Deputy director of marketing at Iran's Natanz nuclear facility, Mostafa Ahmadi Roshan was assassinated on Wednesday, January 11, when an unknown motorcyclist attached a magnet bomb to his car.

Ahmadi Roshan was immediately killed as the result of explosion, and his driver, who had sustained injuries, died a few hours later in hospital.

On January 15, the Time magazine quoted unnamed Western intelligence sources say all Iranian nuclear scientists assassinated in the past two years have been, in fact, victims of Israel's intelligence agency, Mossad.

The sources said assassination of Ahmadi Roshan “followed the pattern of previous operations planned by Mossad and carried out over the past two years by Iranians trained and paid by Israel's spy agency.”

The London-based Sunday Times also reported on January 15 that Mossad agents were responsible for the assassination of Ahmadi Roshan.

In her message, the UN High Commissioner for Human Rights Navi Pillay noted that UN Secretary-General Ban Ki-moon has always vehemently condemned all acts of terrorism or assassination of any person, Iran's Foreign Ministry said on Monday.

She added that the UN emphasizes on the right of the Iranian officials to punish those who perpetrate such crimes in accordance with equitable international standards.

Ahmadi Roshan was a Sharif University of Technology chemical engineering graduate.

His assassination came after Iran reached an agreement with the P5+1 -- Britain, China, France, Russia, and the United States plus Germany - to hold negotiations in Turkey.

The US, Israel and their allies accuse Iran of pursuing a military nuclear program and have repeatedly threatened Tehran with the "option" of a military strike.

Meanwhile, in November 2011, some of the US presidential hopefuls called for conducting covert operations ranging from assassinating Iranian nuclear scientists to launching a military strike on Iran as well as sabotaging Tehran's nuclear program.

The calls for assassinations are not idle threats as a number of Iranian scientists have been assassinated over the past few years.

Professors Majid Shahriari and Masoud Ali-Mohammadi are among the victims of these acts of terror.

Shahriari and Fereydoun Abbasi were targeted by terrorist attacks in November 2010. Current director of Iran's Atomic Energy Organization Abbasi only sustained injuries but Shahriari was killed on the spot.

Iran says the perpetrators were in a position to trace Dr. Abbasi because the anti Iran UN Resolution 1747 adopted in March 2007 cited his name as a "nuclear scientist".

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News ID 181563