ShotSpotter gives cops head start after gunmen kill 2 adults, injure 3 kids on Fourth of July

CPD Deputy Chief Don Jerome (center) speaks to the media after a shooting left two adults dead and three children injured on the Fourth of July 2024. (Tom Ahern)

CHICAGO — ShotSpotter technology gave Chicago police officers a 90-second head start after five people, including three children, were shot in Grand Crossing this morning. 

At about 6:15 a.m., the gunfire detection system pinpointed the exact address where police found five victims inside a bullet-riddled home in the 7100 block of South Woodlawn.

Here is the actual audio of the gunfire as captured by the city’s ShotSpotter network:

An officer in the local police district’s intelligence center reported one shot fired on the street, followed by multiple rounds fired on the sidewalk in front of the home. Moments later, another 12 rounds were detected outside the house.

CPD Deputy Chief Don Jerome said the shooting involved a “personal dispute.” Investigators determined that two cars pulled into the neighborhood and multiple gunmen opened fire on the house. All of the victims were found inside that residence, according to the deputy chief.

“We know it’s personal. We don’t know what it’s about,” said Jerome.

CPD officers found a 45-year-old woman dead from gunshots in the living room of the residence. A 24-year-old woman later died at the University of Chicago Hospital, and three boys, ages 5, 7, and 8, were taken to Comer Children’s Hospital in critical condition, according to CPD. A one-year-old girl reportedly escaped injury. (Update: The oldest boy has succumbed to his injuries.)

Jerome said responding police officers tried to save the victims by administering first aid, including CPR, tourniquets, and pressure bandages.

A recording of CPD radio traffic shows that the first 911 calls about shots fired were dispatched 90 seconds after officers were told about the ShotSpotter alert. Here’s how it sounded:

Audio source: Broadcastify

Police asked anyone with information about the crime to submit an anonymous tip at

Previous reporting

Critics of the ShotSpotter system insist that it is inaccurate and ineffective. Some say it is racist. Cook County State’s Attorney Kim Foxx claimed that ShotSpotter does not contribute significantly to firearms-related prosecutions in the city.

Our team reads hundreds of Chicago police reports every week. We can say with certainty that ShotSpotter alerts routinely result in the arrests of armed men—and they’re almost always men—after shots are fired in the city. This series includes cases we happened to come across during our work. It is not an exhaustive list of every ShotSpotter case filed.

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