United States President Donald Trump said the US had carried out attacks against three nuclear sites in Iran, including the site in Fordo.
Trump posted on his Truth Social account that a "a full payload of bombs was dropped" on the site, that is known to be located several dozen meters underground, making it more difficult to attack, reports the Deutsche Welle.
According the post, all planes that took part in the strikes left Iranian airspace.
"Congratulations to our great American warriors," Trump said, adding that it is now "time for peace."
The impact of the strikes is still not clear.