Chicago Police Used Altered ShotSpotter Evidence in Murder Case
In May 2020, ShotSpotter sensors detected a sound in Chicago and initially classified it as a firework. After police requested re-analysis, a ShotSpotter analyst manually reclassified the sound as a gunshot. The altered evidence was used to charge Michael Williams with murder. Williams' public defender filed a motion challenging the evidence's validity, and prosecutors subsequently withdrew the ShotSpotter evidence.
- Date it happened
- 2020-05-31
- Organisation involved
- Chicago Police Department
- Product, system or model
- ShotSpotter
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