"In recent weeks, intensive talks, with the mediation of a regional country were held for the release of Iranian and American prisoners," the semi-official news agency said, not specifying which country was the mediator.
It also said that "Billions of dollars of Iran's frozen assets because of the U.S. sanctions will be released soon."
Iran said in August it was ready to swap prisoners with the United States, after U.S. Secretary of State Antony Blinken tweeted that "Siamak Namazi had now spent 2,500 days wrongfully detained" in Iran and Washington was determined to secure the freedom of all Americans held by its Middle East adversary.
Tehran has sought the release of over a dozen Iranians in the United States, including seven Iranian-American dual nationals, two Iranians with permanent U.S. residency and four Iranian citizens with no legal status in the United States.
(Writing by Parisa Hafezi; Editing by Josie Kao)