The US State Department announced on Tuesday that Turkey would be subject to sanctions under a bill President Donald Trump signed into law last summer, which seeks to punish companies that do business with Russia’s defense industry, Press TV reported.

“We made it clear that if Turkey buys S-400s… there will be consequences. We will introduce sanctions within Countering America's Adversaries Through Sanctions Act (CAATSA),” Assistant Secretary of State for European and Eurasian Affairs Wess Mitchell said at a Senate Foreign Relations Committee hearing.

The S-400 system, whose full name is the Triumf Mobile Multiple Anti-Aircraft Missile System (AAMS), is an advanced Russian missile system designed to detect, track, and destroy planes, drones, or missiles as far as 402 kilometers away. It has previously been sold only to China and India.

On April 3, Turkish President Recep Tayyip Erdogan and his Russian counterpart Vladimir Putin said in Ankara that they had agreed to expedite the delivery of S-400 missile systems. The delivery is expected to start between late 2019 and early 2020.

The United States has repeatedly warned Turkey against the consequences of its decision to buy the S-400 missile batteries from Russia, saying Washington could slap Ankara with sanctions over such a purchase.

The US State Department official added on Tuesday that Washington could also hold off on delivering more Lockheed Martin F-35 Joint Strike Fighter jets to Ankara.

Turkey received the first two F-35s for training purposes last week, and the next four deliveries to the country are not expected until 2019.

Reporter’s code: 50101