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The surveillance footage released on Friday by Kenosha Unified School District shows that Kenosha officer Shawn Guetschow, who was working as a security guard at the school, intervening in a fight on March 4 by placing his knee on the girl's neck for half a minute to subdue her, NBC reported on Tuesday.
Jerrel Perez, the girl's father, has called for criminal charges against Guetschow for using a type of restraint that was banned for Wisconsin law enforcement officers last year. Perez said his daughter is in therapy and seeing a neurologist for her injuries.
Guetschow resigned from his security guard post with the school on Tuesday, but remains employed by the city police force, Kenosha Police Department tweeted.