“The United States bears direct responsibility for any action the Zionist regime Israel takes in relation to violating regional peace and security against Iran,” he said.
The bombing followed ongoing strikes across the country by Israel and the United States.
Mr Grossi warned that radiological releases with serious consequences cannot be ruled out.
The plant’s operators reported that vehicles were damaged, the Vienna-based agency stated on Tuesday.
“It reiterates full support for the agency and its director general in implementing its mandate independently and impartially,” France’s foreign ministry said.
International Atomic Energy Agency head Rafael Grossi, in an interview broadcast on Sunday, said Iran could resume enriching uranium within months.
A fragile ceasefire between Iran and Israel, announced by U.S. President Donald Trump on Monday night, is holding.
Before both sides confirmed that a ceasefire was in place early Tuesday, they exchanged fire.
“The risk is real. Military escalation threatens lives and delays the diplomacy that’s needed to resolve this crisis,” he said.
Mr Grossi said that Israeli attacks on Iranian nuclear facilities were degrading critical safety systems.
