In a message on Friday, Presdient Mahmoud Ahmadinejad condoled the bereaved families of martyred Iranian nuclear scientist Mostafa Ahmadi Roshan and his colleague Reza Qashqaei on their martyrdom in a terrorist attack on Wednesday. Condemning the terrorist attack by \'agents of imperialism and international Zionism\', President Ahmadinejad also condoled Iranian nation and the scientific and academic societies on the sad occasion. In the most recent instance of a string of assassination attempts against Iranian scientists, Ahmadi Roshan was martyred on January 11 after an unknown motorcyclist attached a magnetic bomb to his vehicle in Tehran. Ahmadi Roshan was a chemical engineering graduate of Iran\'s prominent Sharif University of Technology.