Austrian Foreign Ministry spokesman also noted that the meeting is unlikely to be comprised of the same members that negotiated in Vienna during previous rounds of talks earlier this year before July 20, including Iran and six powers — Russia, the United States, Germany, France, Britain and China.

He stressed that this time the talks could be held separately between Iran and the United States or other six nations representatives.

On October 6, Russian Deputy Foreign Minister Sergei Ryabkov said the date of the next round of talks between Iran and the group of six nations could be announced within the coming two weeks.

The Russian diplomat added the full-format meeting will be preceded by consultations between Iranian Foreign Minister Javad Zarif and the EU foreign policy chief, Catherine Ashton.

The West has accused Tehran of developing nuclear weapons under the guise of a civilian nuclear program — claims repeatedly denied by the Iranian authorities. At a meeting held in November 2013 in Geneva, Iran and the P5+1 group agreed to reach a long-term nuclear agreement by July 2014. The deadline was later postponed to November 2014.