Original:  Speaking to The Guardian on condition of anonymity, an official with close links to the Iranian Government in Iran said that he believed the Bid Kaneh explosion was "part of the covert war against Iran, led by Israel".
Revised:  Speaking to The Guardian on condition of anonymity, an official with close links to the Iranian Government " spoke to The Guardian anonymously and claimed that the blast was "part of the covert war against Iran, led by Israel".
Edit intent: clarity