The son of a Chicago police officer is the latest victim of the city's gun violence.

Police say 19-year-old Arshell Dennis was shot in the chest early Sunday and pronounced dead. A 20-year-old man also was shot and hospitalized in serious condition. Both were on a porch outside a home.

Police spokesman Anthony Guglielmi says the deceased's father, Arshell "Chico" Dennis, worked patrol with Superintendent Eddie Johnson.

The younger Arshell was set to begin his junior year at New York's St. John's University and to return to school Sunday. Johnson says he was a "good kid" with "a promising future as a journalist."

Guglielmi says police haven't ruled out anything, but a leading theory is the shooting is a mistaken identity case. Neither victim had criminal records or gang affiliations.