Iran has begun working on infrastructure for building advanced centrifuges at its Natanz facility, Ali Akbar Salehi, the director of Iran's Atomic Energy Organisation said today.
Iran's nuclear activities would remain within the framework of the 2015 nuclear agreement with world powers, Salehi said.
Salehi also said Iran had developed infrastructure to produce electricity at Natanz.
Last month, the US pulled out of what it referred to as the "defective" nuclear deal signed between the P5+1 states in 2015. The move has put the future of the deal at risk and left European leaders scrambling to ensure Iran complies with its terms and companies wondering if they should do business with Tehran as the US threatens to apply unilateral sanctions on the Islamic Republic.