The United States on Thursday imposed sanctions on several Iranian and Turkish companies and a number of aircraft in a move targeting four Iranian airlines, CNBC reported.

The companies targeted were linked to Mahan Air and Meraj Air, the U.S. Treasury Department said in a statement. It also said it was targeting a number of their aircraft, as well as aircraft from Caspian Airlines and Pouya Air.

The United States said the two airlines had ferried weapons, fighters and money to proxies in Syria and Lebanon. Washington also threatened sanctions for others granting landing rights and providing services to the aircraft.