An Amtrak police officer shot a man in an exchange of gunfire Tuesday at Chicago Union Station, after the agency was notified the man was wanted on a warrant for murder, according to the rail passenger service.

       The man was taken to Northwestern Memorial Hospital in ??traumatic arrest,?? according to the Chicago Fire Department.

       Three others, including the Amtrak officer, were also taken to hospitals, the Fire Department said.

       The shooting took place shortly after 5 p.m., after the Amtrak Police Department was notified that a person with several warrants, including one for murder, was arriving on a train at Union Station. When Amtrak police officers met him on the platform he ran, injuring an Amtrak employee, and then opening fire on officers, Amtrak spokeswoman Olivia Irvin said in a statement.

       A Chicago Fire Department ambulance at Union Station in Chicago after a reported shooting incident on Aug. 24, 2021. (Terrence Antonio James / Chicago Tribune)

       Police and ambulances respond to the scene of a reported shooting at Union Station in Chicago on Aug. 24, 2021. (Terrence Antonio James / Chicago Tribune)

       One officer returned fire, hitting the man, Irvin said. Paramedics treated him inside Union Station, on the platform between tracks 28 and 30, before taking him to the hospital, Fire Department spokesman Larry Langford said.

       The other three people taken to hospitals included the Amtrak employee injured as the man ran, and the Amtrak officer who returned fire, who was taken for examination, Irvin said.

       The others had minor injuries, and none were gunshot wounds, Langford said.

       Trains were stopped in Chicago for about 30 minutes, Irvin said.

       Amtrak and the Chicago Police Department are investigating.

       Check back for updates

       sfreishtat@chicagotribune.com

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