WASHINGTON ( CNN ) -- The U.S. Navy has charged six guards accused of assaulting detainees in May at Camp Bucca in Iraq , naval officials said Thursday . U.S. guards patrol at Camp Bucca in Iraq in May . The Army Criminal Investigation Division investigated alleged incidents that left two detainees with minor bruises . The division also investigated an incident in which eight prisoners were confined overnight to a housing cell that had been sprayed with a riot control agent , the Navy said . The six guards will face courts-martial . Seven other cases have been resolved through nonjudicial punishment , according to a statement from the commander of U.S . Naval Forces-Central Command . The courts-martial are expected to start within 30 days at Camp Bucca , which is in southern Iraq near the Kuwaiti border . The guards accused in the case are assigned to Navy Provisional Detainee Battalion 4 .
Navy guards accused of assaulting detainees at Camp Bucca . Eight prisoners were confined to cell sprayed with riot control agent , Navy says . Navy : Two detainees allegedly left with minor bruises .