Yellow Flowers Mark Guthrie Case as Nancy Guthrie Remains Missing in Tucson

84-year-old Nancy Guthrie has been missing since the early hours of Jan. 31 in Tucson’s Catalina Foothills. Four weeks into the investigation, authorities say tips are being followed but no suspect has been named. Guthrie’s front yard has become a sea of yellow flowers as community members offer support; DNA evidence from a glove found near the residence has been submitted for analysis, and detectives are reviewing doorbell video while a large contingent of law enforcement continues the search until Guthrie is found or all leads are exhausted.