Prosecutors abruptly dropped their case Monday against John Mark Karr in the slaying of JonBenet Ramsey, saying DNA tests failed to put him at the crime scene despite his insistence he strangled the 6-year-old beauty queen.
Just a week and a half after Karr's arrest in Thailand was seen as a remarkable break in the sensational, decade-old case, prosecutors suggested in court papers that he was just a man with a twisted fascination with JonBenet who confessed to a crime he didn't commit.