Police investigators can routinely collect DNA samples from suspects arrested for a serious crime to solve old cases, the U.S. Supreme Court ruled Monday.
The 5-4 ruling came in Maryland v. King, where a convicted rapist had argued his Fourth Amendment privacy rights were violated when police used DNA to connect him to an earlier crime. The court reinstated Alonzo King's conviction for a 2003 rape uncovered after his 2009 arrest for an unrelated assault.