ElBaradei was previously scheduled to present the report at a session of the IAEA Board of Governors in June. The report is expected to note progress at the talks with Iran on its uranium enrichment program.
"The director general of the International Atomic Energy Agency (IAEA) will deliver his report [on Iran] sometime soon, probably late on Monday," the English-language Press TV channel quoted an anonymous source as saying.
In his March report on Iran, El-Baradei said that progress had been made in clearing up the remaining questions over the past nuclear activities of the Islamic Republic, but questions over the military aspects of past uranium enrichment still had to be cleared.
Iranian Foreign Ministry spokesman Mohammad Ali Hosseini said on Sunday that Iran will continue transparent cooperation with the IAEA.
The diplomatic standoff between Iran and the West began almost six years ago over suspicions that Tehran was secretly developing atomic weapons. Tehran has always maintained that it needs nuclear technology for electricity generation only. Two rounds of UN sanctions have so far been imposed on Tehran - in December 2006 and March 2007.
Iran has so far defied three rounds of relatively mild United Nations Security Council sanctions over its nuclear program.
