Nancy Guthrie latest: Law enforcement faces cooperation issues Sources reveal Arizona local law enforcement delayed cooperating with federal investigators in the early days of the search for Nancy Guthrie. Former NYPD senior hostage negotiator Greg Yovane explains why he's 'not surprised.' NEW You can now listen to Fox News articles! The FBI launched a billboard campaign related to the search for missing Nancy Guthrie in hopes of finding a "crucial piece of information" to bring her home.  An

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