Police arrested Sheppard Friday night and charged him with aggravated sexual assault, aggravated assault and endangering the welfare of a child.
It is not immediately known if Sheppard has retained a lawyer.
Police were called to the home Friday afternoon and found a 9-month-old girl in cardiac arrest. She died later at a hospital.
The infant's mother, 19-year-old Sheila Troutman, has not been charged.
The baby's two-year-old sibling is in the custody of the Division of Youth and Family Services.
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