The Iranian negotiating team and US Secretary of State John Kerry are planning to resume the talks and pick up where they left off in Monteux, Switzerland last week.
Iranian and US nuclear negotiators are to conduct concise talks in the Swiss city of Lausanne next week.
They will also have a short visit to Brussels for discussions.
The Iranian team will be led by Foreign Minister Mohammad Javad Zarif who is going to hold talks with his American counterpart John Kerry.
They are planning to resume the talks and pick up where they left off in Monteux, Switzerland last week. A European Union (EU) representative will also attend the talks.
Zarif, accompanied by his deputies Abbas Araghchi and Majid Takht Ravanchi will be hosted by the EU Foreign Policy Chief Federica Mogherini during his brief Brussels visit.
Mogherini has invited Foreign Ministers of Iran, Britain, France and Germany to Brussels.
Zarif will return to Laussane then to resume talks with US nuclear delegation.
All sides in Iran’s nuclear negotiation process hope to clinch a political agreement by the end of March and a comprehensive accord by July to finally end the 12-year nuclear row.