Police reviewing surveillance images after sex assault

January 11, 2012 3:13:41 PM PST
Chicago police are investigating a sexual assault on Chicago's South Side.

It happened around noon Tuesday in a vacant lot near the 9300-block of South Chappel.

Police say the victim was assaulted by three men. She went to a nearby store to called for help.

Investigators are reviewing surveillance cameras in the area as they search for leads in the attack.

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