The five-month-old infant, who was identified as Cecilia Thomas, was struck in the head Friday evening when shots were fired from another vehicle in the South Shore neighbourhood, according to police and the Cook County Medical Examiner's Office.

Cecilia was taken to a hospital where she later died.

A 41-year-old man in another vehicle was in a stable condition at a hospital after suffering a gunshot wound near his eye, Chicago police said.

No arrests have been made.

The baby would have turned 6-months-old in four days, according to Natalia Derevyanny, a spokeswoman for the Cook County Medical Examiner's Office.

Crisis responder Andrew Holmes, who spoke with Cecilia's mother, expressed anger at the shooter, saying, "you shouldn't sleep at night" and urged the person to turn themselves in.

"You just took this baby's life. This baby was an infant, this baby didn't do nothing to you," he said.

Australian Associated Press