Iran calls on UN to condemn killing of nuclear scientists

Speaking to CNN, Iran's UN ambassador Mohammad Khazaee said Israel was behind the attacks which have seen three scientists killed in the three last years."There is firm evidence that certain foreign quarters are behind such assassinations," a letter sent to the UN said.

"It is highly expected from the Secretary-General of the United Nations, and President of the Security Council of the United Nations as well as all other relevant organs and bodies to condemn, in the strongest term, these inhumane terrorist acts."

In the latest attacks, nuclear scientist Mostafa Ahmadi Roshan was killed in a blast in Tehran. According to CNN, a motorcyclist placed a magnetic bomb under Roshan's car. Two other scientists were killed in a similar fashion in the capital city in the last two years, it added.

"They are trying to assassinate the Iranian scientists to deprive Iranians from the right of using peaceful nuclear energy," Khazaee insisted with CNN. "We believe that these terrorist attacks are supported by some elements -- especially within the Israeli regime as well as some quarters around the world."

Iran's state news agency also reported that International Atomic Energy Agency bore responsibility for passing on information about Iran's nuclear scientists to other countries.

But Secretary of State Hillary Claims rejected the claims, saying that the United States was not involved "in any kind of act of violence inside Iran".