CHICAGO (CBS)– Police said a man was fatally struck by a train after he was pushed onto the Red Line tracks.

Chicago police are investigating the homicide that took place at 87 Street and the Dan Ryan just after midnight. Police said two men got into an argument, leading one man to push another onto the tracks.

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The suspect was arrested and charges have not been released.

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Police are trying to find the name of the victim.

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This is a developing story.