Iran’s Foreign Minister Mohammad Javad Zarif, his US counterpart John Kerry along with the EU nuclear coordinator Catherine Ashton started their tripartite talks in Muscat on Sunday.

Iran's Foreign Minister Mohammad Javad Zarif, his US counterpart John Kerry along with the EU nuclear coordinator Catherine Ashton started their tripartite talks in Muscat on Sunday.

They are expected to reach a comprehensive deal over Iran's nuclear program after months of talks.

The talks will focus on disputes between Iran and G5+1, mainly about enrichment, lifting of the sanctions and duration of the agreement.

The second round of negotiations is scheduled to be held this afternoon.