(FOX NEWS) — A South Dakota mother who beat her 2-year-old son to death because he wet the bed was sentenced to 40 years in federal prison Tuesday.

Katrina Shangreaux, 30, of Porcupine on the Pine Ridge Reservation, pleaded guilty in March to second-degree murder in the July 2016 death of Kylen, 2.

Shangreaux admitted to assaulting the toddler with a studded belt, the Rapid City Journal reported.

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