CHICAGO (CBS)– A Metra train hit a car, causing the car to hit a person on the Southwest Side.

The incident took place at 87th Street and Pulaski Road Wednesday night.

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Four people were seriously injured and their conditions are unknown at this time.

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The crash delayed the Southwest Service Line and Metra inbound and outbound trains were halted.

As of Thursday, the Southwest service is set to run as scheduled.

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This is a developing story.