The footage shows a man walking behind the 11-year-old girl on the street and sidewalk in a residential neighborhood.
He approaches her from behind and gropes her, as she tries to break free.
Suddenly, a neighbor is heard shouting "Hey, leave her alone!"
The voice startles the man, who lets the girl go, turns around and gets into a nearby car. He drove off in a gray Nissan Kicks.
The incident happened Monday around 3:15 p.m., according to the Los Angeles Police Department.
Jose Jaime, 30, was arrested Wednesday after detectives served a search warrant at his home, police said. He was booked on suspicion of aggravated kidnapping and his bail was set at $1 million.
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