IAEA spokeswoman Melissa Fleming said the resolution had been "adopted without a vote, by consensus."

Iran had earlier warned that an accord with the European Union over its nuclear program would become void if the International Atomic Energy Agency (IAEA) adopted the resolution.

Mohammad Saidi, deputy head of Iran's Atomic Energy Organization, said in Tehran that the resolution was "unacceptable" and that "the Paris accord will become void if the resolution proposed by the Europeans is adopted."

Iran signed an accord with the EU in Paris in November under which it agreed to suspend uranium conversion and enrichment fuel cycle work for the duration of negotiations aimed at securing guarantees that its program is purely peaceful.