CHICAGO (CBS) — A teenage boy died overnight, after being show while riding in a car with his father over the weekend.

As WBBM Newsradio’s Bernie Tafoya reports, police say they do not have any suspects in the shooting that killed Deshun Winfert, 15, and wounded his father.

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LISTEN: WBBM Newsradio’s Bernie Tafoya reports

Winfert, 15, of the 2900 block of West 65th Street, was pronounced dead at 10:32 p.m. Monday at Advocate Christ Medical Center in Oak Lawn, according to the Cook County Medical Examiner’s office.

The boy and his father, 32, had just stopped at a stop sign at 66th and Mozart streets near their Marquette Park neighborhood home, around 11:45 p.m. Sunday, police said.

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A silver sport-utility vehicle pulled up alongside their car, and the front-seat passenger pulled out a gun and started shooting, police said.

Both the father and son were shot in the chest before the gunman fled in his vehicle east on 66th Street, police said. Winfert’s father drove off south on Mozart Street, before calling 911 near 63rd Street and Kedzie Avenue a few blocks away.

No one has figured out why Winfert and his father were shot. Police tell the Chicago Tribune he had no known gang affiliations.

Winfert had been a freshman at Simeon High School. His mother tells the Tribune, “They took my baby for no reason.”

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The Sun-Times Media Wire contributed to this report.