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WASHINGTON PARK, IL (KTVI) – The suspected triggerman in a fatal carjacking that took place earlier this week in downtown St. Louis was killed Thursday by law enforcement in Washington Park, Illinois.

Washington Park police said officers were attempting to arrest 21-year-old Deonta Gates near 51st and Eastgate when the shooting occurred. A spokesman with the Illinois State Police said U.S. Marshals and a Caseyville officer shot Gates, who was pronounced dead at the scene.

Gates was wanted in connection with the murder of 21-year-old Brandi Hill, who was killed Sunday evening.

Hill, her 9-month-old daughter, and a friend were driving east on Washington Avenue near 11th Street around 10:30 p.m. that night when two men approached their vehicle on foot and demanded the keys to the car, a 2015 Dodge Challenger.

The suspects opened the passenger-side door and pulled the victim's friend out of the car. One of the suspect's then shot Hill, walked around to the driver's side, and pulled her from the car, leaving her in the street. That suspect then fled in the victim’s vehicle with the child still inside. The second suspect ran to the car at 11th Street and then jumped in the car.

The suspects later left the child at Angelica and 22nd. The baby was found a few blocks from Fairground Park safe, unharmed, and still in the car seat. Police found Hill’s car on Bremen Avenue, not far from Hyde Park.

Hill, an O'Fallon resident, was a 2013 graduate of Fort Zumwalt South High School. She also attended Fort Zumwalt West, where she belonged to the track team.

As for Gates, investigators believe he was responsible for a murder in East St. Louis that occurred a couple of weeks ago.

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