Iran's Telecommunications Ministry says it is cleaning up all remaining industrial and personal computer systems infected with a malicious malware known as Stuxnet, Press TV reported.
"The infected computers are in the process of being cleaned of the virus," Iran's Telecommunications Minister Reza Taqipour told Mehr news agency on Monday.
All governmental institutions have been trained to control this malware and managed to keep the computer worm from spreading, he added.
Taqipour said most government institutions and offices have succeeded in removing the malware from their systems completely.
"Iranian computers are no longer facing this [Stuxnet] threat," he noted. "This computer malware wormed its way into industrial systems via flash memories and not through networks."
The Iranian minister reiterated that "the sources" behind the spread of computer virus have been nearly identified.
Stuxnet, 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.
In July, media reports claimed that Stuxnet had targeted industrial computers around the globe with Iran being the main target of the attack, particularly the country's newly launched Bushehr power plant.
However, Iranian officials have dismissed the claims, saying that the computer worm had caused no serious damage to the country's industrial sites.
The Iranian Intelligence Minister Heidar Moslehi has also ruled out any connection between recently arrested nuclear spies and the Stuxnet case.