PITTSBURGH (KDKA) — An East Hills woman has been found guilty in the death of her infant involving a fentanyl-filled sippy cup.

On Tuesday, a jury found 23-year-old Jhenea Pratt guilty of involuntary manslaughter and endangering the welfare of children.

WEB EXTRA: Police interview mother convicted in fentanyl sippy cup death.

Authorities say that Pratt called 911 on April 5 of last year after finding her 17-month-old daughter, Charlette Napper-Talley, unresponsive.

Officers performed CPR and the little girl was rushed to Children’s Hospital, where she died.

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Pratt was arrested last August in connection to the death of her daughter after tests showed that fentanyl was in the little girl’s sippy cup, which investigators said was next to her bed.

Police say that the amount of fentanyl in her system was enough to kill a large animal. Pratt told authorities that she did not know how the drug got into the sippy cup.