Three Fort Campbell Army soldiers were charged with conspiracy and other offenses over alleged illegal purchases and transfers of dozens of guns to Chicago, some of which were traced back to a mass shooting in March.

Acting U.S. Attorney Mary Jane Stewart for the Middle District of Tennessee announced the charges on Tuesday against Demarcus Adams, 21, Jarius Brunson, 22, and Brandon Miller, 22, who were arrested that morning, according to the Justice Department.