Jacob Owens / KVOA-TV: Nanos pushes back on claims of withholding evidence in Guthrie case - TUCSON, Ariz. (KVOA) - Pima County Sheriff Chris Nanos is pushing back on claims that he is withholding crucial evidence from the FBI in the Nancy Guthrie case. - Nanos denies the allegations, describing the report as "not even close to the truth."