The Iranian foreign minister has said his country will “take revenge” for an attack on an underground nuclear site, for which it has blamed Israel.
Iranian officials said the Natanz uranium enrichment plant was the target of “nuclear terrorism” on Sunday, after initially reporting a power failure.
New advanced centrifuges to enrich uranium had just been activated there.
Israel has not commented, but public radio cited intelligence sources as saying it was a Mossad cyber operation.
They said it had caused more extensive damage than Iran had reported.
US intelligence officials told the New York Times that a large explosion had completely destroyed the independent internal power system that supplied the centrifuges inside the underground facility. They estimated it could take at least nine months to resume enrichment there.
Iran’s Nour News agency, which is affiliated to the Supreme National Security Council, cited an intelligence ministry source as saying the “main perpetrator” had been identified and an operation was under way to arrest them.