CHICAGO (AP) — Chicago Police say a 27-year-old man has been arrested and charged with first-degree murder in the fatal shooting this month of a 9-year-old boy on the city's South Side.

Police Superintendent Garry McCarthy said at a news conference Friday that Corey Morgan of Chicago is in custody. He says the boy was killed as part of a dispute between warring gangs, and he pledged to obliterate the gangs.

The victim,

, was gunned down Nov. 2 in what police say was a targeted shooting.

McCarthy has said the boy was lured into the alley and killed because of his father's gang ties.

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