MESA, Ariz. - Police say it appears a mother of a patient at a suburban Phoenix children's hospital took her child's life before taking her own.

Authorities say staff at Cardon Children's Medical Center in Mesa found a woman and her 5-year-old child dead inside the child's room sometime after 2 a.m. Saturday.
    
Mesa police spokesman Steve Berry says the mother had a fatal gunshot wound but did not say how the child died.
    
Investigators believe the mother killed the child and then herself.  No one else in the hospital was threatened or harmed.
    
Berry says the child had been hospitalized for the past week but did not say why.
    
The investigation remains ongoing.