U.S. District Judge Jennifer Rearden of the Southern District of New York on Thursday sentenced Charles McGonigal, the former special-agent-in-charge of the FBI’s Counterintelligence Division in New York, to four years and two months in prison for conspiring to violate U.S. sanctions and launder money.

McGonigal pleaded guilty in August to participating in a scheme to assist sanctioned Russian billionaire Oleg Deripaska.