They show ` ` unjustified treatment '' of detainees , ACLU says . The documents were released to the study group by the U.S. military . The Defense Department says it takes detainee abuse seriously .
Documents show `` unjustified homicide '' of detainees , ACLU says . The documents were released to the rights group by the U.S. military . The Defense Department says it takes detainee treatment seriously .