Iranian deputy foreign ministers for the second time on Tuesday conferred with European Union's Foreign Policy Deputy Chief for Coordination Helga Schmid, IRNA reported.
Seyyed Abbas Araqchi and Majid Takht Ravanchi discussed bilateral ties and regional developments with Schmid in the Norwegian capital.
Ravanchi said that the main topics of the negotiations were the Joint Comprehensive Plan of Action (JCPOA) and removal of obstacles hindering banking transactions.
The summing up of the negotiations will take place tomorrow during the meeting and consultations of Foreign Minister Mohammad Javad Zarif and his US counterpart John Kerry in Oslo.