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Story summary
- Grei Mendez, 38, and her husband Felix Herrera Garcia, 37, were sentenced to 25 years to life for fentanyl poisoning that killed 22-month-old Nicholas Dominici at their New York City day care.
- A jury found them guilty of second-degree murder and assault.
- They were already serving a 45-year federal sentence for drug charges tied to the case.
- Prosecutors said fentanyl was processed in the same kitchen used for children's food.