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HOUSTON -- Police said a father beat his baby while his girlfriend, the child's mother, ignored his behavior.

Houston police said David Purnell, 20, beat his 9-month-old daughter three weeks before she was taken by ambulance to Texas Children's Hospital with bruises all over her body and face.

Cortney Prescott, 19, is also charged because police say knew about the abuse, but waited three weeks before taking her baby to the hospital.

Purnell is still in jail and charged with injury to a child.

Prescott is out on bond and charged with injury by omission.

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