The inspection was conducted as a report is due early next week on Iran's program to the United Nations Security Council.
Unveiled in the look into Iran's capabilities is how the country has apparently overcome some earlier problems that had plagued further enrichment. The Iranians previously had difficulty keeping centrifuges spinning at high speeds needed to make nuclear fuel.
Those troubles appear to have been solved, according to the IAEA's director general.
“We believe they pretty much have the knowledge about how to enrich,” said Mohammed ElBaradei.