"We have had no damage to equipment. There was small damage to a roof and the (satellite) pictures were taken when the roof was removed for repairs," government spokesman Ali Rabiei told a news conference carried by state media.
Iranian state media on June 23 said the sabotage attempt against the nuclear building had been foiled, adding that it caused no "loss of life or property damage".
Iran has accused Israel of several attacks on facilities linked to its nuclear programme and killing its nuclear scientists over the past years. Israel has neither denied nor confirmed the allegations.