The fourth round of nuclear talks between the U.S. and Iran, which were slated to take place in Rome over the weekend, have been postponed, according to Oman’s foreign minister. 

"For logistical reasons we are rescheduling the US Iran meeting provisionally planned for Saturday May 3rd. New dates will be announced when mutually agreed,” Omani Foreign Minister Badr al-Busaidi wrote Thursday in a post on social platform X. 

Washington “never confirmed its participation in the fourth round of talks with Iran on Saturday in Rome,” a U.S. official familiar with the matter, who spoke on condition of anonymity to describe internal deliberations, said Thursday. 

“Timing and venue for the next round have yet to be confirmed, but we expect they will take place in the near future,” the official added. 

Iranian officials said Thursday that discussions were “postponed at the request of Oman’s foreign minister,” according to The Associated Press. 

Iran's Foreign Ministry spokesperson Esmail Baghaei said Tehran is still committed to getting to a “fair and lasting agreement.”

The first and third rounds of talks were held in Muscat, Oman, while the second round of discussions were held in Rome at the Omani ambassador’s residence. 

Middle East envoy Steve Witkoff, who was appointed by President Trump, has led the U.S. in the discussions, while Iranian Foreign Minister Abbas Araghchi is the lead negotiator for the Islamic Republic. 

Trump has threatened to launch strikes on Iran if diplomacy goes sideways. The talks seek to restrict Iran’s nuclear program, while in return U.S.’s economic sanctions could be lifted. 

The latest round of talks, which took place last weekend in Oman, also included technical discussions between the two teams. The discussion lasted more than four hours and was described as “positive and productive” by U.S. officials.