NEW YORK (CBSNewYork/AP) — The unrelated deaths this weekend of two small children in the Bronx have police investigating whether relatives or family friends caused both deaths.

On Friday, police say they were called to E 227 Street for a 5-year-old boy not breathing. When officers arrived, 5-year-old Jamar Johnson was unconscious. He was taken to the hospital where he later died.

Police say an autopsy determined he suffered traumatic injuries and have ruled his death a homicide. Police say they arrested 21-year-old Kim Crawford on murder and manslaughter charges.

Then on Saturday, police say they were called to East 140th Street where 3-year-old Anita Ortiz was in cardiac arrest. She was taken to the hospital but died soon after.

The Medical Examiner has yet to determine her cause of the death. The investigation is still ongoing.

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