The Latest: At least 2 sought in Chicago teen's death

The Latest on a teenager killed while delivering newspapers with his stepfather in Chicago (all times local):

11:58 a.m.

Chicago police say they are looking for at least two suspects in the slaying of a 15-year-old boy who was shot in the head while delivering newspapers with his stepfather.

Anthony Riccio, chief of the bureau of organized crime, said Monday that police believe Brian Jasso's death Sunday morning may have been a case of mistaken identity and Jasso was shot as part of a gang war he had nothing to do with. Police say neither the teen nor his stepdad had any gang affiliations or arrests.

Riccio said witnesses told police that the boy's stepfather was at a stop sign when a white van appeared to accelerate and strike his car. He says the van flashed its bright lights in an apparent signal to pull over. But the stepfather sensed something wrong and when he drove away a passenger in the van opened fire with a handgun.

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9:55 a.m.

Chicago police are canvassing the city's Southwest Side for surveillance video after a 15-year-ol boy was fatally shot while delivering newspapers with his stepfather.

Police spokesman Anthony Guglielmi said Monday that detectives are also interviewing witnesses.

Investigators say they're trying to determine if the Sunday shooting was a case of mistaken identity or possibly the result of an earlier encounter between the gunman and the victim or his stepfather. The shooting occurred in an area known for gang violence.

Police say the victim, Brian Jasso, was shot in the head after someone pulled up next to the vehicle he was in with his stepfather.

Chicago Tribune publisher and editor Bruce Dold says the newspaper is "saddened and stunned by the news."

The boy's stepdad is an independent contractor who delivers the Tribune and other newspapers.

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6 a.m.

Police say a 15-year-old boy was fatally shot while helping his stepfather deliver newspapers in Chicago.

Investigators say a man in another vehicle pulled up to the car Sunday and opened fire. The boy, Brian Jasso, was shot in the head.

Chicago police spokesman Anthony Guglielmi says investigators are trying to determine if the boy's death was a case of mistaken identity. The shooting happened in an area known for gang violence.

Chicago Tribune publisher and editor Bruce Dold says the newspaper is "saddened and stunned by the news."

The boy's stepdad is an independent contractor who delivers the Tribune and other newspapers.