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PHILADELPHIA (CBS) — Police in Philadelphia have launched an internal investigation into the arrest of a black teenager outside the Philadelphia Zoo.

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Cellphone video shows the 14-year-old’s arrest last Thursday.

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Viral Video Shows Police Arresting Teen Selling Water At Philadelphia Zoo

A zoo spokeswoman says police were flagged down by a zoo public safety officer who’d been trying to disperse the group for soliciting money from patrons.

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Now, after community complaints, police are looking into whether the officer’s actions were appropriate.