Article continues below advertisementAs the search for Nancy Guthrie enters its fifth week, a retired FBI agent suggested a possible connection to a $66 million cryptocurrency home invasion in Scottsdale, Ariz., involving two California teenagers who posed as delivery drivers.While authorities have not officially linked this incident to separate cryptocurrency ransom demands involving the 84-year-old mother of Today show co-host Savannah Guthrie that occurred the same day in Tucson, the events happened within two hours of each other.