Maricopa County Attorney Bill Montgomery announced the indictment of four relatives of 10-year-old Ame Deal on Wednesday.
Deal died after being locked inside a plastic storage box.
Ame's cousins, John Allen and Samantha Allen, both 23-years-old, are charged with first degree murder, conspiracy to commit child abuse and multiple counts of child abuse.
Ame's grandmother, 72-year-old Judith Deal and Ame's aunt, 44-year-old Cynthia Stoltzmann, are each charged with multiple counts of child abuse.
“This horrific case has deeply disturbed not only the citizens of Maricopa County, but people throughout the country as it offends the essence of what it means to be a parent or guardian of a young child,” said Montgomery. “Instead of caring for Ame Deal, we are alleging that these family members utterly failed her. My office will spare no effort in seeking justice for Ame and ensuring the public has confidence in the result,” he added.
According to court documents, John Allen locked Ame in a storage box as punishment on July 11. His wife stood by and watched.
Allen and the other adults in the home went to sleep and the child died inside the box.
Ame's death was originally reported as a tragic accident from playing hide-and-seek.
According to police, investigators later found that the incident was the latest is a long history of abuse.
John and Samantha remain in custody on a $1 million cash bond. Judith and Cynthia are being held on a $500,000 cash bond.
The defendants are scheduled to be arraigned on August 17.