Police say it appears a mother of a patient at a suburban Phoenix children’s hospital took her son’s life before taking her own.

Authorities say nurses at Cardon Children’s Medical Center in Mesa found the woman and her 5-year-old child dead inside the child’s room after 2 a.m. Saturday.

Mesa police spokesman Steve Berry says the mother had a fatal gunshot wound but did not say how the boy died.

Investigators believe the mother killed the child and then herself.

No one else in the hospital was threatened or harmed.

The boy had been hospitalized for the past week. Berry declined to say why because of privacy rules.

Police say the mother has an open case with the Arizona Department of Child Safety, but she was the boy’s legal guardian.

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