Mealey's (September 13, 2016, 9:26 AM EDT) -- PHILADELPHIA — Citing common-law and statutory investigative privilege, a suburban Philadelphia police department told a Pennsylvania federal court on Sept. 9 that an investigative file from a 2005 suit alleging assault by Bill Cosby is not subject to disclosure in a defamation suit filed against a former district attorney who declined to prosecute the assault case (Andrea Constand v. Bruce Castor, No. 2:15-cv-05799, E.D. Pa.)....