CHICAGO (CBS) — A Northern Indiana Commuter Transportation District Transit Police officer shot a 33-year-old man Thursday morning during a struggle on board a South Shore Line train at the Hegewisch station.

Chicago police said the man was on a South Shore Line train when he “became verbally aggressive toward a ticket collector and conductor” around 8:15 a.m. at the Hegewisch stop at 137th and Brainard.

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The conductor called Northern Indiana Commuter Transportation District Transit Police for assistance, and while an officer was trying to remove the passenger from the train, the man got into a fight with the officer, who shot the man in the stomach.

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Police said the 33-year-old man was taken to University of Chicago Medical Center for treatment. His condition was not immediately available.

The transit officer also was taken to a hospital to be treated for facial injuries.

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Chicago police were investigating.

CBS 2 Chicago Staff