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.

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

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.

This is a developing story.