In a Wednesday meeting, Zarif and Turkish FM Mevlüt Çavuşoğlu discussed the expansion of bilateral ties between Tehran and Ankara, particularly in the field of banking. 
They also exchanged views on the latest regional developments.
Earlier in the day, the Iranian top diplomat also met his Azeri counterpart Elmar Mammadyarov.
During the talks, the two sides explored avenues for promoting mutual economic cooperation between Iran and Azerbaijan Republic, particularly in the field of railway.
They also conferred on energy ties in the Caspian Sea as well as the issue of Jerusalem al-Quds.
Zarif arrived in Baku on Tuesday to attend the fifth round of Iran-Azerbaijan-Turkey trilateral talks, which are currently underway in the Azeri capital.