Washington- The US Department of Treasury has imposed sanctions on 11 Iranians and two entities accused of aiding Iran’s nuclear program or engaging in malicious cyber-activity.

The sanctions freeze any assets they may hold in the US and prohibit Americans from doing business with them.

The Treasury announced that the relevant parties were involved in activities in support of the Revolutionary Guard Corps (IRGC) and to carry out harmful cyber-attacks against the US financial system.

Two companies based in Ukraine and two companies located in Iran also appear on the list.

The Treasury listed an Indian company, headquartered in Iran, on the sanctions’ list due to the company’s activities in providing financial and technological support as well as other forms of supports, goods and services to the IRGC in its ballistic missiles program.

In its statement, the Treasury revealed that the firm has since 2014 entered into contracts to procure and install numerous, multi-ton explosion-proof crane systems for the IRGC organization which is responsible for researching and developing ballistic missiles.

The ministry also designated Ukraine-based Khors Aircompany and Dart Airlines for aiding designated Iranian and Iraqi airlines through the provision of aircraft and services.  Both Khors Aircompany and Dart Airlines help Iran’s Caspian Air and Iraq’s Al-Naser Airlines procure US-origin aircraft, as well as crew and services.

“Treasury will continue to take strong actions to counter Iran’s provocations, including support for the IRGC-Quds Force and terrorist extremists, the ongoing campaign of violence in Syria, and cyber-attacks meant to destabilize the US financial system,” Treasury Department Secretary Steven Mnuchin said in a statement on Thursday.