Iranian Foreign Minister Mohammad Javad Zarif and US Secretary of State John Kerry have met for surprise talks on the Islamic Republic’s nuclear program on the sidelines of a security conference in Munich.

Iranian Foreign Minister Mohammad Javad Zarif and US Secretary of State John Kerry have met for surprise talks on the Islamic Republic’s nuclear program on the sidelines of a security conference in Munich.

Zarif and Kerry, who were heading delegations from their respective countries, held a two-hour discussion over the latest developments about the nuclear negotiations between Iran and the P5+1 group on Sunday.

Kerry huddled with Zarif for the second time during their stay in the southern German city as Kerry was due to fly back to Washington later in the day.

Few details of the tough negotiations have leaked. This is the second time in a week Zarif and Kerry meet in Munich.

On Friday, the two officials held a two-hour meeting aimed at narrowing differences on a deal over Iran’s nuclear program.

A senior US official said after the Friday meeting between Zarif and Kerry that the US secretary of state “reiterated our desire to move toward a political framework by the end of March.”