Deputies foreign ministers of Iran and their counterparts from member states of the Group 5+1 ended a 1.5-hour talks in Geneva Sunday night, IRNA reported.
The talks were held by Nicolas Dorier of France, Sergei Ryabkov of Russia, Simon Gass of Britain, Hans-Dieter Lucas of Germany and Wang Yi of China along with their Iranian counterparts Abbas Araqchi and Majid Takht-e Ravanchi.
Helga Schmid, deputy EU foreign Policy chief Federica Mogherini was also present in the discussions.
The last meeting between the two sides was held about 45 days ago in Geneva.
On Saturday, Araqchi, the top nuclear negotiator of Iran, said this round of talks focuses on finding innovative ways to accelerate the nuclear negotiations.
This round of talks is for the first time attended by Chairman of Atomic Energy Organization of Iran Ali Akbar Salehi and US Secretary of Energy Ernest Moniz. The two attended the talks to discuss detailed technical issues.
Salehi and Moniz held three rounds of talks on Saturday and Sunday.
The Iranian top nuclear energy official referred to his talks with Moniz as intensive and serious adding that it is too soon to judge about the outcome of the discussions.