Police say they have identified a suspect in a recent Waukegan shooting in which a Zion man was killed during an exchange of gunfire. A 27-year-old Waukegan man has been arrested, and Waukegan police said they have referred the case to the Lake County State’s Attorney’s Office. The man’s identity has not been released. Waukegan police said the man is believed to have fired the shots that killed Christopher Tapia, 19, of Zion. The suspect and Tap…