The report from the International Atomic Energy Agency's director general "will very likely be presented to the 35 members of the IAEA Board of Governors on Monday," the source said.
IAEA General Director Mohamed ElBaradei, in his previous report on Iran, presented to the Board of Governors in May, noted progress in clearing up the remaining issues on Iran's past nuclear activities, but said several questions remained unanswered.
In August Tehran hosted several rounds of talks between Iran's Atomic Energy Organization and the IAEA.
Iran has consistently rejected Western allegations that its nuclear program has military goals, saying it needs atomic power for electricity. Russia has almost finished building the country's first nuclear power plant in Bushehr.
