Asghar Zarean, who heads security at the Atomic Energy Organisation of Iran, said domestic intelligence agencies were instrumental in uncovering the plot, which has not been the first attempt to disrupt the contentious nuclear programme.
"Several cases of industrial sabotage have been neutralised in the past few months before achieving the intended damage, including sabotage at a part of the IR-40 facility at Arak," he said in a statement issued by his organisation today.
"This specialised lab has been launched to identify, prevent and fight threats including modern software viruses," Zarean said.