For two months, the Philadelphia Police Department has had a new policy to stop false confessions, including putting strict limits on how long suspects can be held for questioning and preventing witnesses from being taken from a crime scene to a detective division for questioning, the Philadelphia Daily News reports. There have been a couple hiccups. The PPD issued a three-page clarification about the new interview and interrogation policy, including that it is reasonable under the Fourth Amendment to temporarily detain people found at a crime scene even though they can refuse to be taken to a detective division, the Daily News further reports.