A fourth round of Iran-US talks over Tehran's nuclear programme has been postponed. The foreign minister of Oman, facilitating negotiations, said Saturday's talks in Rome were being rescheduled because of logistical reasons, adding that a new date would be set when agreed by all sides.

Oman has announced that planned negotiations between Iran and the United States this weekend over Tehran’s rapidly advancing nuclear program have been postponed.

A fourth round of talks between the United States and Iran, which had been due to take place in Rome on Saturday, has been postponed and a new date will be set "depending on the U.S. approach", a senior Iranian official told Reuters on Thursday.