The US Justice Department announced on Tuesday that five Russian nationals, including a suspected security official, and two Americans were charged with illegally supplying sensitive electronic components and ammunition to Russia, AFP reported.

Three of them are in custody, one is awaiting extradition to Estonia, and four are at large, the report said.

“The Department of Justice and its international partners will not tolerate criminal attempts to support Russia’s military efforts in Ukraine,” Secretary Merrick Garland was quoted as saying in the document.

According to the indictment, the seven defendants worked for at least five years for two Russian companies “managed by special services” in their country.

The companies procured components that were likely to have a military purpose and were therefore subject to strict regulations and illegally imported them into Russia using shell companies and multiple bank accounts.

According to the document, goods valued at millions of dollars were transported through Estonia, Finland, Germany and Hong Kong.

In March, both companies came under US sanctions in response to Moscow’s invasion of Ukraine.

According to prosecutors, this did not stop them from continuing their trade: in October, one of the suspects tried to cross the border between Estonia and Russia with 35 types of semiconductors and thousands of machine gun cartridges. In November, he was again denied entry to Russia with tactical ammunition. He was finally arrested on December 6 by Estonian authorities at the request of the United States.

The seven defendants are accused of fraud, conspiracy, smuggling, money laundering and violation of international sanctions, and face up to 30 years in prison.