Authorities said earlier this month a bone that might be related to the case was found . NEW : Biological mother of Zahra Baker arriving from Australia . The family is now in a safe place and are being supported by the Australian government. The 10-year-old 's disappearance is being investigated as a homicide . The girl 's stepmother is charged with obstruction of justice .
NEW : Biological mother of Zahra Baker arriving from Australia . The family is now in a safe place and are being supported by the Australian government. The 10-year-old 's disappearance is being investigated as a homicide . The girl 's stepmother is charged with obstruction of justice .