"Technical inspectors from the International Atomic Energy Agency (IAEA) will visit Iran on August 6 to work on the regulations under which inspections of Iranian nuclear sites will be carried out," it cited an unnamed Iranian official as saying.

The talks will focus foremost on the Natanz enrichment facility, but also on the Isfahan uranium conversion plant and other Iranian nuclear sites.

IAEA deputy head Olli Heinonen visited Tehran for a first round of talks with Iranian officials on July 12.

Another round of talks was held in Vienna on Tuesday, during which the UN's nuclear watchdog agency said inspectors would visit a heavy-water Iranian reactor either next Monday or Tuesday.

The West fears Iran could enrich uranium to a high enough level for use in an atomic bomb, but Tehran insists its atomic drive is peaceful and designed to meet the energy needs of its growing population.

Tehran's refusal to fully address some IAEA questions and its resumption of enrichment activities, which it had suspended for more than two years, prompted the world body to refer Iran to the UN Security Council in February 2006.

Since then the Security Council has adopted two sets of sanctions punishing Iran for its defiance in refusing to suspend uranium enrichment.

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