Yukiya Amano made his assessment in a regular update to the International Atomic Energy Agency’s board of governors, confirming a confidential report distributed to member states last month.
He said, “Iran is implementing its nuclear-related commitments under the Joint Comprehensive Plan of Action,” referencing the official name of the 2015 deal.
Amano added, “It is essential that Iran continues to fully implement those commitments.”
Amano noted that his report on verification and monitoring in Iran in light of United Nations Security Council Resolution 2231 (2015) covers relevant activities of the IAEA in the country in the last few months.
Amano further said in his statement that the IAEA would continue to verify the “non-diversion of nuclear material” declared by Iran under its Safeguards Agreement.
“Evaluations regarding the absence of undeclared nuclear material and activities in Iran continue,” he noted.
Amano also said the IAEA carefully examines all safeguards-relevant information about implementing verification activities in Iran, but emphasized that this analysis “normally takes time, and takes action when appropriate.”
“The agency undertakes analysis and takes action in an impartial, independent and objective manner, within the existing safeguards framework and in line with established safeguards practice,” he added.
In a quarterly report on Friday, the IAEA said Iran continues to observe the restrictions on its nuclear activities.
Iran remained within caps on the level to which it can enrich uranium and its stock of enriched uranium in accordance with the JCPOA, the report by the UN nuclear agency said, even as the US reimposed sanctions against Tehran.
The US unilaterally withdrew from the deal last year and snapped back unilateral sanctions on Iran which were lifted under the JCPOA.
The other signatories — Germany, France, Britain, Russia and China — are trying to keep alive the deal, which offered Iran economic incentives.
AP and Press TV contributed to this story.