By Tara Molina

HOMETOWN, Ill. (CBS) — A Metra train hit a car that in turn hit a pedestrian at 87th Street and Pulaski Road Thursday, leaving four people seriously injured and halting the SouthWest Service Line.

Metra said inbound and outbound train movement was halted at the accident scene — on the cusp of the Ashburn community on Chicago’s Southwest Side and suburban Hometown.

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The Fire Department said two people were sent to the University of Chicago Medical Center in critical condition. Two more were taken to Advocate Christ Medical Center in Oak Lawn, and those people’s conditions were described as “grave.”

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Inbound and outbound train movement was halted near the Ashburn station at 83rd Street and Central Park Avenue.

As of 10 p.m., the train that hit the car remained halted on the tracks as investigators put the pieces together.

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The entire area was blocked off on both sides of the tracks, CBS 2’s Tara Molina reported.

Tara Molina