Article continues below advertisementInvestigators searching for Savannah Guthrie's missing mom are now turning to the same forensic strategy that caught Bryan Kohberger in the 2022 University of Idaho murders.The Pima County Sheriff's Department confirmed in a press release on Tuesday, February 17, that a pair of gloves found near Nancy Guthrie's Tucson, Ariz., home did not "trigger a match" in CODIS, the FBI's national database. "Investigators are currently looking into additional investigative genetic genealogy options for DNA evidence to check for matches," the department said.