The process of releasing US prisoners held in Iran will take up to two months, Iran's Foreign Ministry Spokesperson Nasser Kanaani said on Monday during a press conference.
"A specific time frame has been announced by relevant authorities, and it will take a maximum of two months for this process to take place," Kanaani said.
Earlier this month, Tehran and Washington reached an agreement whereby five US citizens held in Iran would be freed while $6 billion of Iranian assets frozen in South Korea would be released.
South Korean media reported on Monday that the assets have been transferred to Switzerland's central bank last week for exchange and transfer to Iran.
The Swiss National Bank plans to exchange the $6 billion holdings in won for dollars and then euros in the currency market, converting about 300 billion won ($223.85 million) to 400 billion each day for next five weeks, Yonhap Infomax reported, citing an unnamed currency market source.
An official at South Korea's finance ministry declined to confirm the report, citing the legal and diplomatic sensitivity of the matter.
Iranian President Ebrahim Raisi said last week that the released assets would be used to enhance domestic production.