Earlier on Saturday there were reports that US B-2 bombers, which carry so-called "bunker buster" bombs, were headed out of the US.
Trump did not say what kind of US planes or munitions were involved.
Tehran had threatened reprisals on US forces in the Middle East if Trump attacked but the US president called for "peace."
"There is not another military in the World that could have done this. NOW IS THE TIME FOR PEACE!" he said.
'Very successful attack' on 3 Iran nuclear sitesPresident Donald Trump said Saturday the US military has carried out a "very successful attack" on three Iranian nuclear sites, including the underground uranium enrichment facility at Fordo.
"We have completed our very successful attack on the three Nuclear sites in Iran, including Fordow, Natanz, and Esfahan," Trump said in a post on his Truth Social platform.
"A full payload of BOMBS was dropped on the primary site, Fordow."
Trump added that "all planes are safely on their way home. Congratulations to our great American Warriors."
US strikes Iran on Day 10Khaleej Times returns this morning with the latest updates as the Israel-Iran conflict enters its ninth day.
For in-depth coverage of the ongoing hostilities, explore our previous real-time updates:
June 13–18 live blog
Day 7 live updates
Day 8 live blog
Day 8 live blog
At 3:57am, US President Donald Trump announced that the US has carried out successful strikes on three nuclear facilities in Iran — Fordo, Natanz, and Esfahan.
You may also like
Sitaare Zameen Par Box Office Collection Day 2: Aamir Khan's Film Mints Whopping ₹21.50 Crore
Strength before peace: Netanyahu lauds Trump for strikes on Iran's nuclear facilities
Over 66s may qualify for these benefits if missing out on Winter Fuel Payments
I made 'healthy' muffins full of 1 veg and everyone had the same reaction
The UK beach so beautiful it gets a perfect score of 5 - and has barely any tourists