The U.S. Treasury Department announced on Friday that sanctions had been placed on the board of directors of Iranian drone manufacturer Paravar Pars, noting that Russian drone attacks on Ukraine’s vital infrastructure had been made with Iranian drones.

Eight top officials of Paravar Pars have been designated by the Treasury Department’s Office of Foreign Assets Control (OFAC), according to a statement from the department.

For producing drones for Iran’s Islamic Revolutionary Guard Corps Aerospace Force, the drone manufacturer had already received sanctions from the United States and the European Union.

“Iranian entities continue to produce UAVs (unmanned aerial vehicles) for Iran’s IRGC and military. More broadly, Iran is supplying UAVs for Russia’s combat operations to target critical infrastructure in Ukraine,” said Brian Nelson, the U.S. Treasury’s top sanctions official.

As a result of Friday’s action, all property and interests in property of those individuals that are in the United States or in the possession or control of U.S. persons must be blocked and reported to OFAC, the Treasury Department said. People that engage in transactions with the individuals designated on Friday may themselves be exposed to sanctions; the department added.

The United States on Tuesday had put new trade restrictions on seven Iranian entities for producing drones that Russia has used to attack Ukraine. The firms and other organizations were added to a U.S. export control list for those engaged in activities contrary to U.S. national security and foreign policy interests.

Since Russia launched its war against Ukraine in February 2022, the United States and over 30 other countries have sought to degrade its military and defense industrial base by restricting its access to defense needs.

Tuesday’s statement from Iran’s envoy to the UN in New York was as follows: “Iran produces all of its drones domestically, thus sanctions have no impact on Iran’s ability to develop drones. This is solid evidence that the drones shot down in Ukraine and employing components made in Western nations are not Iranian-made.”