CHICAGO (WLS) -- A Chicago police officer was shot and killed Thursday evening on the South Side, CPD officials said.

The incident happened at East 82nd Street and South Drexel Avenue in Chatham.

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While Chicago police officers were conducting an investigatory stop at the location, a suspect fled into a nearby apartment building, CPD Superintendent Larry Snelling said during a 2:45 a.m. news conference Friday.

The officers pursued the suspect into the building, where they encountered a different suspect who was armed with a rifle, Snelling said. The suspect fired the rifle, and an officer also shot their weapon during the incident.

A 36-year-old female officer was shot and was taken to the University of Chicago hospital in a squad

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