Three American men had been sentenced to death in Congo but were extradited to the U.S., where they were charged with with participating in the failed coup.

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.

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.