What the record says
Charlie Chop-off is the pseudonym given to an unidentified American serial killer known to have killed three black children and one Puerto Rican child in Manhattan between 1972 and 1973. The assailant is also known to have attempted to murder one other child. All the victims of Charlie Chop-off were male, and all but one of the attacks involved genital mutilation or attempted genital mutilation of the victims.
Summary from Wikipedia, CC BY-SA 4.0. Records change. The source is the authority.
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