A document presented by Iranian businessman Babak Morteza Zanjani to the Iranian parliament that suggested that there was a connection between himself and Tajikistan's national bank has been labeled a fake by the bank.

Tajikistan's national bank has denied cooperation with Babak Morteza Zanjani, who has been blacklisted by the United States, Radio Free Europe Radio Liberty reports.

The authenticity of the document was brought into question last week by a group of Iranian lawmakers.

The document allegedly states that the Tajik National Bank transferred $2 billion to Iran's Oil Ministry.

In April, Zanjani was accused by the U.S. Treasury Department of operating a network of front companies to help Iran move billions of dollars to a company controlled by Iran's elite Islamic Revolutionary Guards Corps. Such an action would be a violation of U.S. Sanctions, Radio Free Europe Radio Liberty reports.