NEW : Casey Anthony 's parents express grief , ask for compassion . Meter reader Roy Kronk comes forward , says he saw bag in wooded area . He is questioned by police and released without charge. Nieves said Thursday that police were conducting a thorough review of the tips and their response but emphasized that the meter reader has been cooperative and is not a suspect . Medical examiner declares Caylee 's death a homicide .
NEW : Casey Anthony 's parents express grief , ask for compassion . Meter reader Roy Kronk comes forward , says he saw bag in wooded area . He is questioned by police and released without charge. Medical examiner declares Caylee 's death a homicide .