Araqchi met German Deputy Foreign Minister Hans Dieter Lucas, his British counterpart Simon Gass and French Deputy Foreign Minister Jacque Au Dieber in the Swiss city on Wednesday night.
The quadrilateral talks focused on the trend of progress in the ongoing Iran-Group 5+1 talks in Geneva.
On Monday, senior parliamentary officials in Tehran warned that Iran would stop negotiating with the world powers in case the US Congress approves any new sanction against the country.
Member of the parliament's National Security and Foreign Policy Commission Mohammad Hassan Asafari made the remarks after a meeting between his commission members and the Iranian negotiating team, including Zarif and his deputies, Araqchi and Majid Takht Ravanchi at the parliament on Sunday night.
