The men recently had their sentences commuted to life imprisonment for their role in an attempted coup last May in the central African nation.

Three Americans repatriated to the United States from Congo have been charged by the U.S. Justice Department with staging an elaborate coup attempt aimed at overthrowing the African nation’s government.

The U.S. Department of Justice has charged four Americans for their role in an attempted coup in the Democratic Republic of Congo after three of the men were returned to U.S. custody this week, according to a criminal complaint unsealed on Wednesday.