Rene Diaz, 33, and Crystal Diaz, 31, were accused of burning, handcuffing, and beating 11-year-old Annai Diaz, who went unresponsive and died inside their home.
The couple was already charged with torture, mayhem, and child abuse for allegedly beating, handcuffing, and burning 11-year-old Annai Diaz, but the girl's cause of death remains a mystery.