A federal judge in Newark has turned back the American Civil Liberties Union’s request for information about the FBI’s allegedly unconstitutional use of racial and ethnic “mapping” under the pretext of policing national security.

U.S. District Judge Esther Salas held Monday in ACLU-NJ v. Department of Justice, 11-cv-2553, that the bureau conducted adequate records searches and satisfactorily explained its decisions to withhold some of the documents.