The entrances to the nuclear facility in Isfahan via underground tunnels were impacted, International Atomic Energy Agency (IAEA) General Rafael Mariano Grossi confirmed in a Sunday statement. 

The statement said that in addition to Isfahan, the nuclear sites of Fordow and Natanz are confirmed hits.

The IAEA could not yet confirm the extent of the damage at the Fordow nuclear site with certainty due to its location inside a mountain. 

(illustrative) US President Donald Trump over a satellite image of Iran's Fordow nuclear site.
(illustrative) US President Donald Trump over a satellite image of Iran's Fordow nuclear site. (credit: REUTERS/Kent Nishimura, Maxar Technologies/Handout)

The IAEA said that Natanz’s nuclear facility had already been extensively damaged before the US strikes.

The Iranian regulatory authorities claimed that there have been no additional off-site radiation levels after the most recent attacks.

This is a developing story.