Abena Yeboah was taken into custody by NYPD officers after nanny cam video recorded the alleged abuse.
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Officials say police in Hackensack were first notified of the alleged abuse on July 8.
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Police say the woman could be seen hitting, kicking and yanking the child's arm she was caring for.
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Yeboah faces one count of child abuse and is awaiting an extradition hearing for her return to New Jersey.
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