The United States on Thursday imposed sanctions on a firm it said was participating in a scheme to avoid US sanctions while helping provide jet fuel to Russian forces in Syria.
The US Treasury Department said the newly sanctioned firm, Maritime Assistance LLC, was operating as a front company for OJSC Sovfracht, a company the United States had previously sanctioned in relation to operations in Ukraine.
The Treasury also targeted three individuals it said were tied to Sovfracht, freezing any assets they may hold in the United States and barring Americans from dealing with them.
Five ships were also designated as "blocked property" of previously sanctioned Russian firm Transpetrochart, which Washington alleges provides support to Sovfracht.
The United States accuses Sovfracht of being behind a sanctions-evasion conspiracy to make payments and facilitate the transfer of supplies of jet fuel to Russian forces operating in Syria in support of the government of President Bashar al-Assad.