13 injured in Chicago mass shooting

CHICAGO, IL - SEPTEMBER 19: Police investigate the scene in Cornell Square Park on the Southside where 11 people including a three-year-old child were shot on September 19, 2013 in Chicago, Illinois. Eighteen people were reported shot in the city, including one fatally, in less than a four-hour period on Thursday evening. (Photo by Scott Olson/Getty Images)

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    13 injured in Chicago mass shooting

A mass shooting in a Chicago park injured 13 people, including a 3-year-old child. CNN's George Howell reports.