He told a news conference on Wednesday that "the parents left her for dead, neither offered her help, and even worse, if the girl hadn't shown signs of life, she would have been buried."
He says the parents are charged with attempted murder.
According to Bolivia's "El Deber" newspaper, the mother and stepfather blame the child's bruises and burns on falls.
The girl's funeral was Monday in a poor neighborhood of Santa Cruz. Dr. Carlos Camacho says she is in grave condition at a hospital in the city.
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