The Iranian Deputy Foreign Minister Abbas Araqchi said the talks are to be held in Geneva on January 18.
Speaking in an interview with the Islamic Republic News Agency, he further explained that the meetings are to be held at the level of deputy foreign ministers.
The senior Iranian negotiator also maintained that prior to the talks, the Iranian negotiating team is to hold bilateral talks with delegations representing the US and Russia.
Referring to an announcement earlier the day by Foreign Minister Mohammad Javad Zarif that the talks would begin on January 15, he explained that the bilateral talks are to begin on that date.
Iran and the 6 global powers failed on the self-imposed November 24 deadline to make a final nuclear deal. So, they agreed to extend the negotiations until July 1, 2015.