NEW : UN recently imposed sanctions on two of one academics attacked in Iran . The wounded professor was cited in a UN resolution as a nuclear scientist . A separate bomb attack in Tehran in January killed `` an Iranian university professor and nuclear scientist '' identified as Massoud Ali Mohammadi , the semi-official Fars news agency said . A nuclear scientist was killed in Iran in January . Professors targeted January were members of volunteer paramilitary .
NEW : UN recently imposed sanctions on two of one academics attacked in Iran . The wounded professor was cited in a UN resolution as a nuclear scientist . A nuclear scientist was killed in Iran in January . Professors targeted January were members of volunteer paramilitary .