The U.S. Treasury Department has added four more Iranian firms and two individuals to its sanctions list, saying they are connected to the country's Islamic Revolutionary Guard Corps (IRGC) or affiliated with Iran's national maritime carrier.
The blacklist targets the Iran Maritime Industrial Company SADRA and Deep Offshore Technology PJS, alleging they are owned or controlled by the Revolutionary Guard to generate funds the proliferation of weapons of mass destruction.
The Treasury also designated Modality Limited and Malship Shipping Agency Ltd., which it says are two Malta-based "front companies" of the Islamic Republic of Iran Shipping Lines (IRISL).
In 2008, IRISL was blacklisted for providing logistical support for Iran's ballistic-missile program.
Two employees of the maritime carrier also added to those barred from using the U.S. financial system.