The meeting lasted around 1.5 hours.
The ministers did not make any statements to the press, and are expected to hold several bilateral meetings during the course of the day.
A fresh round of talks between Iran and P5+1 group, comprising Russia, the United States, the United Kingdom, France, China and Germany is currently taking place in Lausanne.
On Sunday, P5+1 foreign ministers held a plenary session without Iran's participation.
Iran and the P5+1 group have held several rounds of talks on Tehran's nuclear program in recent years with limited results. A long-term agreement has to be reached by July 2015.