Alvin Stoll, 17, was shot to death in Jefferson Park. View Full Caption Facebook

CHICAGO — Alvin Stoll, 17, was shot to death in Jefferson Park on Thursday night, officials said.

At 9:06 p.m., the teen was in an alley with another person near the 5300 block of West Foster Avenue when someone shot at him from a dark-colored car, police said.

The teen was brought to Lutheran General Hospital in suburban Park Ridge with a gunshot wound in his abdomen, police said.

Stoll, of the 5500 block of West Higgins Avenue, was pronounced dead at 10:10 p.m., according to the Cook County Medical Examiner's Office.

Julie, who declined to give her last name out of fear for her safety, said she was returning home from a nearby corner store with her 8-year-old daughter Thursday night when she saw two "young kids" sprint through the alley behind her house on Foster.

Alvin Stoll, 17, was shot to death in Jefferson Park. View Full Caption Facebook

A moment later, they ran back toward her gangway with a red car speeding behind them, Julie said. She saw a hand reach outside the car window with a pistol and fire two shots before speeding off.

"I didn't know what to do — I dived down behind my dumpster and huddled over her, so at least if I got hit, she wouldn't," Julie said. "I heard one of the kids say 'I'm hit, I'm hit!' and a minute later there were police all over the place."

One of the two youths appeared to be holding a gun, Julie said.

Police did not say whether officers recovered a gun at the scene.

Julie stayed shut inside her home the next day as her daughter moved furniture in front of the windows to block people from looking inside, she said.

"I've lived in this neighborhood my whole life, and I've never heard of anything like this happening here," she said. "I just can't get the image out of my head of my daughter watching this happen. It's traumatizing."

As news of the shooting started to trickle out, an outpouring of grief was posted on social media.

"Taken way too young," one person wrote of Stoll on Facebook. Another posted, "These today [are too] quick to shoot ... . Something has got to [be] done about the violence in Chicago."

Stoll's family declined to comment at his home Friday.

The homicide was Jefferson Park's first shooting since October 2015, and its fourth since 2010, according to DNAinfo records.

No one was in custody, police said.