Tehran, April 2 (RHC) -- Experts from Iran and six major world powers will meet on Thursday for a new round of talks on Iran's controversial nuclear program, semi-official Fars news agency reported on Wednesday.

Hamid Baeidinejad, an Iranian Foreign Ministry official for Political and Legal Affairs, will lead the delegation in the negotiations, which will be held on April 3-6 in the Austrian capital of Vienna, according to the report.

Iran and the P5+1 group, Britain, China, France, Russia, the United States plus Germany, held a two-day nuclear meeting in Vienna in March. Both EU foreign policy Chief, Catherine Ashton, and Iranian Foreign Minister, Mohammad-Javad Zarif, called the talks “substantive" and "useful."

The West is asking Iran to significantly scale back its nuclear program to ensure the peaceful nature of its nuclear plan. Meanwhile, Iran wants the West to relieve sanctions imposed on the country.

Both sides have agreed to reconvene the next round of talks on May 7 in Vienna, in which they would continue to discuss tough issues, including Iran's heavy water reactor.

Iran and the six major states struck a 6-month interim deal in Geneva last November according to which, Iran would suspend some controversial nuclear activities starting on Jan. 20, while western states would lift some sanctions imposed on Iran.