The report said that the exact date has been set for the next round of nuclear talks between Iran and six world powers of China, France, Russia, Britain and the United States plus Germany.

The date was set after Turkish Foreign Minister Ahmet Davutoglu held separate telephone conversations with Saeed Jalili, Tehran's chief nuclear negotiator, and Iranian Foreign Minister Ali Akbar Salehi on Thursday.

Davutoglu had already spoken with EU foreign policy chief Catherine Ashton earlier in the week, according to the report.

Iran resumed nuclear talks last month in Geneva with the so-called P5+1 nations, UN Security Council permanent members plus Germany, after more than a year.