NEW : A America corrections spokeswoman says Anthony was cooperative . NEW : Anthony tells probation officer that she intends to do well , official adds . Anthony 's attorneys have argued repeatedly -- and , ultimately , unsuccessfully -- that their client should not have to serve her probation in Florida , pointing to a court document that erroneously stated she would serve her probation while in prison awaiting the murder trial . Anthony started her Wednesday probation sentence one-year 6 p.m. . Officials refused to provide Anthony 's location , citing security concerns .
NEW : A America corrections spokeswoman says Anthony was cooperative . NEW : Anthony tells probation officer that she intends to do well , official adds . Anthony started her Wednesday probation sentence one-year 6 p.m. . Officials refused to provide Anthony 's location , citing security concerns .