The crime happened around 7:40 p.m. Saturday in the 100 block of West 87th Street in Chatham, police said.
A man "pretended to fall and brace his fall" by grabbing a 6-year-old girl who was with her mother at the location, CPD said.
Chicago police shared images of the suspect.
He is 40-45 years of age, 180-200 pounds, and was last seen wearing a gray and black baseball cap, a light blue shirt, gray pants and black gym shoes, police said.
No further information was available as Chicago police continue to investigate.
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