Detroit Renews ShotSpotter Contract in Narrow 5-4 Vote
Detroit's own police data shows ShotSpotter alerts lead to an arrest roughly two to three times out of every hundred. The city council voted to keep the system anyway.
The council approved a nine-month extension of its contract with California-based SoundThinking Inc. on Tuesday by a 5-4 margin, keeping the gunshot detection system running through March 2027 at a cost of roughly $2.1 million.
A Split Council, Hours of Testimony
Council President James Tate, along with members Gabriela Santiago-Romero, Denzel McCampbell, and Mary Waters, voted against the extension. Tate said his objection wasn't to the technology itself but to the price. "When asked, would they renegotiate the contract, the answer was no," Tate said, "so that leads me now to a situation where I cannot support this particular amendment."
The council chamber saw hours of public testimony from residents on both sides, including some who credited the system with saving family members' lives.
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The Numbers Behind the Debate
McCampbell pointed to the department's own performance data during the vote. "When the department's own data shows that 911 calls are faster, that arrests only follow two to 3% of the alerts, that aid is rendered to victims that are less than 1% of the calls... that is alarming to me," he said.
SoundThinking figures show Detroit police responded to 24,225 ShotSpotter-triggered gunfire incidents between 2024 and 2025. A separate academic FOIA analysis of the system's first deployment period found just 0.03% of alerts resulted in an arrest, though 13.6% led to a firearm being recovered.
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Surveillance Concerns Persist
ACLU of Michigan policy strategist Gabrielle Dresner testified against the extension, citing unresolved questions over who can access the audio data the sensors collect. Police representatives maintain officers only receive short clips isolating the sound of gunfire itself, not continuous recordings.
The Michigan Court of Appeals ruled in October 2025 that the city violated its own Community Input Over Government Surveillance ordinance in 2022 by failing to post required oversight reports until after a prior extension had already been approved.
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What the Nine Months Buy
The extension gives the Detroit Police Department time to run a competitive bidding process evaluating other gunshot detection vendors before committing to a longer-term system.
First Assistant Chief Franklin Hayes told council the technology has led officers to shooting victims in cases where no one called 911 — including one incident on vacant land where he said police "would not have been there" without an alert.
Detroit first deployed ShotSpotter in 2021. The system now covers roughly a third of the city, concentrated in neighborhoods police identify as most likely to experience gun violence.
TL;DR
- Detroit City Council voted 5-4 to extend its ShotSpotter contract through March 2027
- The extension costs the city approximately $2.1 million for nine months
- Department data shows arrests follow only 2-3% of ShotSpotter alerts
- ACLU of Michigan and several council members raised ongoing surveillance concerns
- The nine-month window lets police evaluate other gunshot detection vendors
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Politics & World News Editor
James Mitchell has covered US and UK politics for over a decade, with a focus on elections, foreign policy, and Capitol Hill. He breaks down complex political stories into clear, fast analysis.
