The child was found at around 3:30 a.m. on Aug. 29 at the Central on Broadway Apartments and appears to be 2 years old.
Police say the child is now in custody of the Arizona Dept. of Child Services, and the investigation is ongoing.
"Child is safe and investigation will proceed to determine the circumstances and well-being of the child," police said in a statement.
A toddler was found alone outside in Mesa early Sunday morning.
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