The UN agency's announcement came hours after Israel's military said it had carried out a series of air strikes in and around Tehran.

"The IAEA has information that two centrifuge production facilities in Iran, the TESA Karaj workshop and the Tehran Research Center, were hit," said the IAEA in a post on X.

"Both sites were previously under IAEA monitoring and verification as part of the JCPOA," it added, referring to a 2015 deal on Iran's nuclear programme.

In another strike on a site in Tehran, "one building was hit where advanced centrifuge rotors were manufactured and tested", the agency added in a post on X.

Hours earlier, an Israeli military statement described its air raid in the Tehran area.

"As part of the broad effort to disrupt Iran's nuclear weapons development programme, a centrifuge production facility in Tehran was targeted," it said.

Centrifuges are vital for uranium enrichment, the sensitive process that can produce fuel for nuclear reactors or, in highly extended form, the core of a nuclear reactor.