On February 21, 2012, the Supreme Court Howes v. Fields reversed the United States Court of Appeals for the Sixth Circuit by holding that an interrogation of an inmate that lasted from five to seven hours, took place in a conference room within the confines of the prison, and concerned criminal activity outside of the prison was not in all instances a custodial interrogation requiring Miranda warnings. In its holding, the Supreme Court made clear that it was rejecting a categorical rule that such interrogations are custodial per se. To read the full opinion please see our link under Law - Case Law - US Supreme Court.