CHICAGO (WLS) -- Chicago police issued an alert Thursday, after a woman was attacked on a CTA Red Line Train on the city's South Side last week.

The incident took place about 8:30 p.m. Nov. 11, in the 100-block of West 35th Street in the Armour Square neighborhood.

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Investigators released pictures of the man they're looking for in connection to the case.

Police say he attacked and robbed an 18-year-old woman riding the Red Line.

The suspect is described as a wearing a green jacket, with a blue jacket underneath and a dark hooded sweatshirt with white images on it, black torn jeans and possible white sneakers, police said.

Anyone with information on the crime is asked to call Public Transportation Detectives at (312) 745-4447 or

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