CHICAGO (CBS) — A 13-year-old boy from West Rogers Park is dead after being shot early Tuesday in the Uptown neighborhood, near Foster Avenue and Broadway.

The shooting happened about 2:20 a.m. at Laurie’s Pizzeria and Liquors, which carries the address 5153 N. Broadway but actually fronts Foster Avenue, police News Affairs Officer John Mirabelli said.

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The boy was eating pizza with his sister and her male acquaintance, when another male fired shots into Laurie’s from outside on the sidewalk, police said.

The boy — identified by the Cook County Medical Examiner’s office as Ivan Alanis of the 7400 block of North Western Avenue — was initially taken in critical condition to Advocate Illinois Medical Center, police said.

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He was pronounced dead there at 3:16 a.m. Tuesday, according to the medical examiner’s office.

No one was in custody Tuesday morning. Area North detectives have launched a homicide investigation, and police said the shooting may have been gang-related.

A Chicago Transit Authority bus driver said buses were being rerouted from the scene as late as 4:30 a.m.

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The Sun-Times Media Wire contributed to this report.