CHICAGO (CBS) — A 28-year-old South Side man will spend the next 20 years behind bars – for shooting an 18-month old girl.

As WBBM Newsradio’s Jan Coleman reports, Tarenzo Dillon was not trying to kill Akirah Vickers, who was seriously hurt when the bullet pierced her small cheek, moved into her shoulder, and exited her back as she sat in her stroller.

He was going after a man who had disciplined his child in a way he didn’t like. The men, who had children by the same woman, got into an argument on July 17, 2010.

Afterward, witnesses say Dillon went into a rage, got a gun from a car, and opened fire — without concern for others who had gathered in Grand Crossing Park, in the 7600 block of South Dobson Avenue.

Dillon allegedly first fired into the air, then into the crowd. He missed the man he’d been arguing with, but struck Akirah and pierced her cheek, police said.

In April of this year, jurors deliberated only two hours before finding the shooter guilty of aggravate battery with a firearm.

LISTEN: WBBM Newsradio’s Jan Coleman reports

The Sun-Times Media Wire contributed to this report.