A West Virginia man has been sentenced to not less than 15 years in prison and not more than life in the death of his infant son.

Harrison County Circuit Judge Thomas A. Bedell handed down the sentence Wednesday for Lucian Alexander Grayson, 19, who was charged last year in the death of one-month-old Rowan Cooper Grayson-Seech, The Exponent-Telegram reported.

The sentence was wanted by the child’s mother, grandmothers and Harrison Prosecutor Rachel Romano for Grayson’s plea to death of a child by parent by child abuse, according to the newspaper.

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A 19-year-old West Virginia father has been sentenced to no less than 15 years in prison for killing his infant son.

At his plea hearing, Grayson said the boy wouldn't stop crying and "something inside me snapped, and I shook him."

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He accepted the consequences for his actions during the sentencing hearing, saying he "made the worst possible mistake I could have made" and that he understood the severity of the sentence he received.