An Israeli military strike on Iran's nuclear complex at Natanz directly hit the underground uranium enrichment plant there, the U.N. nuclear watchdog said on Tuesday, revising its assessment after initially reporting it had been hit only indirectly.

The IAEA has updated its assessment of Israeli airstrikes on Iran's Natanz facility, confirming that the strikes had direct impacts on the underground centrifuge halls.

Centrifuges at Iran's underground uranium enrichment plant at Natanz were likely to have been "severely damaged if not destroyed altogether" following Israeli strikes on Friday, the head of the global nuclear watchdog has told the BBC.