Dante Simmons, who lived in the 1600 block of Juneway Terrace in Rogers Park, was considered a suspect in the slaying, and Simmons was found dead of an apparently self-inflicted gunshot in an Evanston alley this morning, Chicago and Evanston police said. Evanston police said Simmons was also considered a suspect in another killing Friday in Rogers Park, but Chicago Police said his role in the second homicide "has not been determined or verified at this time."