"We are able to confirm that Vadim Mikerin released from the custody of the Federal Bureau of Prisons on April 24, 2018, as shown on our inmate locator," the press office said.
Mikerin was convicted in the United States in December 2015 to four years in prison for attempting to make $2.1 million in illegal wire transfer payments while serving as the head of TENEX's US operations.
READ MORE: US Man Indicted for Allegedly Bribing Russian Nuclear Energy Official
He distributed contracts for the processing of Russian weapons-grade uranium, which was supplied to the United States by the megaton to megawatt program (HEU-LEU) and used as raw material for US nuclear power plants.
The former head of the structure affiliated with Rosatom pleaded guilty to conspiracy to launder illegally acquired funds.