Iran has arrested a number of "nuclear spies" suspected of being behind cyber attacks on its nuclear programme, state media report.
Press TV quoted intelligence minister Minister Heidar Moslehi as saying the alleged spies had been apprehended as part of an operation to block "the enemy's destructive moves".
Last Sunday, Iran said a complex computer worm, the Stuxnet, had targeted its nuclear facilities at Bushehr, but insisted that it had failed to harm the plant's main computer system.
Mr Moslehi did not say how many people were detained, or specify whether the cyber attack referred to the Stuxnet virus.
While the worm also affected computers India, Indonesia and the US, it has spread the most in Iran.
Reports suggest that the Stuxnet virus mutated in Iran and infected 30,000 computers.
It is believed to be the first worm designed to target major infrastructure facilities, the BBC reports.
