CHICAGO (CBS) — A 15-year-old boy was shot and wounded while on a Chicago Transit Authority bus in the South Chicago community Monday night, police said.

Police said the teen got into a quarrel with someone on the bus near 87th Street and Commercial Avenue.

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The other male got off the bus through the rear door and then fired shots back into the bus, striking the boy in the abdomen.

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The boy was rushed to the University of Chicago Medical Center, where his condition as stabilized.

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Police were still searching for the gunman late Monday.