Mass shooting in Chicago park

Rochetta Tyler, right, aunt of 3-year-old Deonta’ Howard, comforts his grandmother Semehca Nunn outside Mount Sinai Hospital. Deonta’ was among 13 people who were shot at Cornell Square Park in the Back of the Yards neighborhood on Sept. 19, 2013.

Emergency personnel transport victims from the scene where at least 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood on Sept. 19, 2013.

Clothing and other items litter the shooting scene at Cornell Square Park in the Back of the Yards neighborhood where 13 people, including a 3-year-old, were shot on Sept. 19, 2013.

Chicago police Superintendent Garry McCarthy, right, leaves a news conference Sept. 20, 2013, with other police officials at Chicago Public Safety Headquarters after discussing the shootings at Cornell Square Park the night before that left 13 people wounded.

One of the 13 people shot the night before at Cornell Square Park in the Back of the Yards neighborhood returns to the scene on Sept. 20, 2013.

Community activist Andrew Holmes talks Sept. 20, 2013, with one of the 13 people shot at Cornell Square Park the night before in the Back of the Yards neighborhood of Chicago.

Police scan the scene where 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

Chicago firefighters wash the scene where at least 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood in Chicago on Sept. 19, 2013.

Emergency personnel transport victims from the scene where 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

A woman is loaded into an ambulance at the scene of a mass shooting near 50th and Wood streets in Chicago on Sept. 19, 2013. At least 13 people were shot, including a 3-year-old, in the attack.

People gather in the 5100 block of South Wood Street after multiple shooting victims are attended to and moved to waiting ambulances near Cornell Street on Sept. 19, 2013.

A person is escorted away from a scuffle that occurred following a mass shooting near 50th and Wood streets in Chicago. At least 13 people were shot, including a 3-year-old, in the attack.

Neighbor Alejandro Cabada watches the scene where 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

Emergency personnel transport victims from the scene where at least 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

Neighbors watch the scene where at least 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

Mayra Rodriguez, right, with her mother, Elvia Gonzalez, and daughter Delila Cruz, 2, watch the scene where at least 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood of Chicago on Sept. 19, 2013.

A shooting victim is taken from the scene near 50th and Wood streets in Chicago on Sept. 19, 2013.

People gather at the scene of a mass shooting near 50th and Wood streets in Chicago on Sept. 19, 2013. At least 13 people were shot, including a 3-year-old, in the attack.

Chicago police and emergency medical personnel work at the scene of a mass shooting at 50th and Wood streets in Chicago on Sept. 19, 2013. At least 13 people were shot, including a 3-year-old, in the attack.

Chicago police gather at the scene of a multiple shooting near 50th and Wood streets in Chicago on Sept. 19, 2013. At least 13 people were shot, including a 3-year-old, in the attack.

Police investigate the scene where 13 people, including a 3-year-old, were shot at Cornell Square Park in the Back of the Yards neighborhood on Sept. 19, 2013.