Video from the Jan. 8 incident shows the teenage victim walking on Quentin Road in Marine Park when a man grabs her by the neck and slaps her across the face.
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Police say the attack was unprovoked and the two did not know each other. The victim was treated at the scene for bruising.
On Thursday, police said they arrested 52-year-old Juelun Li on charges of forcible touching, assault, stalking and acting in a manner injurious to a child.
Li was arrested after police say he approached a 17-year-old from behind and grabbed her on the same street as the January incident.
Police say he kissed her before grabbing her and running away.
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Responding officers took him into custody without incident.
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