Washington has yet to respond to Iran about a prisoner swap, Iranian government spokesman Ali Rabiei was quoted as saying by the government's website on Sunday, reiterating that Tehran was ready for a full prisoner exchange with the United States without preconditions.
If a swap goes ahead, it would be one of very few instances of cooperation in an otherwise deeply frayed U.S.-Iran relationship, which has grown more hostile since U.S. President Donald Trump took office.
Both countries have called for the release of prisoners because of the new coronavirus outbreak. Iran is the worst hit country in the Middle East, while the United States has reported the highest number of deaths worldwide from the virus.