On August 14, 2002, Jafarzadeh drew worldwide attention by revealing that Iran was running a secret nuclear facility in Natanz, and a dideuterium oxide facility in Arak. These revelations led to inspections of the sites by the International Atomic Energy Agency (IAEA). After their first inspection, IAEA, said in a report on Iran's nuclear activity that traces of uranium, greater than what is needed for a civilian power program, were found on Iranian nuclear equipment, although Iran claimed that the source of the uranium was from equipment imported to Iran from Pakistan. These revelations eventually led to United Nations Security Council's imposing sanctions on Iran on December 23, 2006, over its nuclear program.