The head of the atomic energy watchdog agency of the United Nations will travel to Iran on Sunday for meetings about the country's implementation of its nuclear agreement with major powers, the International Atomic Energy Agency said on Friday, Reuters reported.
IAEA Director General Yukiya Amano expressed "concerns" to Iran last month over its repeated testing of a limit under that agreement on its stock of heavy water, a substance used as a moderator in some nuclear reactors.
Iran has since shipped its excess heavy water out of the country, but diplomats say it has yet to be delivered to a buyer. The United States and its allies say Tehran must do so to comply with the agreement.
"The visit is part of regular high-level contacts between the agency and Iran," the IAEA, which is policing the restrictions the agreement places on Iran's nuclear activities, said in a statement.