Iranian Intelligence Minister Heidar Moslehi says the Stuxnet worm, which was supposedly created to infect Iranian industrial sites, has been detected and thwarted, Press TV reported.
"The virus, which Western media outlets claimed had attacked Iran's nuclear plant system, has been detected and controlled," ISNA quoted Moslehi as saying on Saturday.
The Stuxnet worm, first indentified by Iranian officials in June, is a malware designed to infect computers using Siemens supervisory control and data acquisition (SCADA) - a control system favored by industries that manage water supplies, oil rigs, and power plants.
Iranian experts say the worm may have been created by a state-sponsored organization in the United States or Israel to target specific control software being used in the Iranian industrial sector, including the Bushehr plant - Iran's first nuclear power plant.
Atomic Energy Organization of Iran Director Ali Akbar Salehi had said earlier that the enemy's efforts to infect Iranian nuclear systems had failed.
He made the remarks after Western media outlets claimed that computers at the Bushehr nuclear power plant in southern Iran had been infected with the Stuxnet worm.