"If the Iranians want to meet, we are ready," Rubio told reporters without confirming a meeting later this week.
There have been reports of a meeting between Washington's envoy Steve Witkoff and Iranian Foreign Minister Abbas Araghchi.
A meeting in Oman has been requested by Iran, and the US has approved the location. Discussions are underway on the parameters of the meeting, an Arab diplomatic source told AFP.
White House spokeswoman Karoline Leavitt has previously said that negotiations on the schedule for a meeting are underway. Istanbul was mentioned as a possible meeting location.
