Iranian media report that the head of the UN agency tasked to monitor a nuclear deal with Iran will visit Tehran Thursday to discuss an impasse over interviewing experts he suspects may have worked on atomic arms.

They say that Yukiya Amano of the International Atomic Energy Agency will "receive Iran's alternative proposal to nuclear scientists' questioning."

An IAEA probe of the allegations has been essentially stalemated for nearly a decade, with Iran dismissing them as phony evidence planted by the U.S. and Israel.

Washington insists that the agency be given greater powers in its investigations as part of any overall nuclear deal. That includes questioning people possibly involved in the alleged weapons work — something Tehran says rejects.

The IAEA Wednesday had no immediate comment on the reported trip.