Courts on AI / Algorithms in criminal justice
United States v. Aguilera
U.S. Court of Appeals for the Ninth Circuit · Federal courts of appeals · · No. 25-3366 · opinion
The Ninth Circuit reviews a San Francisco ammunition conviction involving ShotSpotter alerts and witness reports. The opinion affirms suppression rulings tied to the initial police response while vacating the sentence for unrelated sentencing reasons.
- Disposition
- The court affirmed Aguilera’s conviction, vacated his sentence, and remanded for resentencing.
What the court wrote
Verbatim from the court's document (public domain). Ellipses mark omitted text; nothing is paraphrased.
ShotSpotter is a service that detects gunshots and alerts local police to the precise coordinates where the gunshots were detected. USA V. AGUILERA 5 of 22nd and Capp Streets. Several officers arrived near the El Trebol bar around 2:00 a.m., within minutes of receiving the reports of gunshots at that location. A witness, later identified as Briseno, said he saw the shooter—a Hispanic male wearing a blue jacket—fire into the air and head westbound down 22nd Street. A second person outside El Trebol pointed officers in the same direction and said, “they went that way.” Officers Hurtado and Frisk saw a person walking away in that direction
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