Investigators searching for Savannah Guthrie's mom, Nancy Guthrie, are turning to similar technology once used to capture convicted murderer Bryan Kohberger. A press release issued on Tuesday, February 17, by the Pima Sheriff's Office confirmed the news after noting that a pair of gloves found two miles away from Nancy's Arizona home on Thursday, February 12, did not "trigger a match" in the "national CODIS database." (The database electronically compares DNA profiles.