According to Caspian International News Agency, reporting from the Russian Sputnik News, USA has secretly sent an airplane carrying the equivalent of $400 million to Iran. This airplane was full of wooden pallets containing the currencies of different countries such as euro, and Swiss franc. The reason for using these currencies is the fact that dollar transactions between Iran and USA are prohibited.
Swiss and Dutch banks have provided the money which has been sent to Iran. Some sources stress that this may have been ransom for the release of 4 American National including Jason Rezaian (Journalist), Amir Hekmati (Marine), Saeed Abedini (Pastor), and Nosratollah Khosravi in January 2016.
The US government rejects this claim saying that this payment is not related to freeing the prisoners. According to an official narrative, this $400 million is part of the $1.7 million which USA is going to pay to Iran as reimbursement for canceling the arms deal of 1979.
In January 2016, Iranian authorities announced the release of an American student, in addition to the aforementioned nationals. The United States of America released 7 Iranians, two of which have dual citizenship, and withdrew their request for arresting 14 Iranians from Interpol.
(Translating by Negar Lotfi)