Two men have been charged in connection with last week's shooting that injured 13 people, including a 3-year-old boy.
Authorities say 21-year-old Bryon Champ and 20-year-old Kewane Gatewood were charged late Monday in the shooting at Cornell Square Park, which is located in Chicago's southwest side.
McCarthy says detectives are continuing the investigation.
Authorities say as many as three people opened fire Thursday on a basketball court in the Back of the Yards neighborhood. Among those injured were 3-year-old Deonta Howard, who is recovering from surgery after being shot near an ear, along with two teenagers.