 Karr's confession to the crime earned widespread attention, but DNA tests later ruled him out as a suspect.Tracey and Karr corresponded extensively; Tracey contacted Boulder law enforcement and worked with them as an informant, which ultimately lead to their decision to charge Karr with the murder.Radio host Peter Boyles called Tracey an "opportunist" who "has perpetuated the JonBenét mystery for his own benefit", while Paul Voakes, dean of the University of Colorado at Boulder journalism school, "defended Tracey as an altruistic investigator".