
Detroit Police
Facial Recognition Match Wrongly Jails an Eight-Months-Pregnant Woman for Carjacking
On February 2, 2023, Detroit police arrested Porcha Woodruff, 32 and eight months pregnant, at her home as she was getting her children ready for school, charging her with robbery and carjacking.
- 01TRIGGEROn February 2, 2023, Detroit police arrested Porcha Woodruff, 32 and eight months pregnant, at her home as she was…
- 02MACHINE ACTIONDecision system
- 03MISSING GATENamed SME review and decision audit trail
- 04IMPACTRights & due process
The short version
On February 2, 2023, Detroit police arrested Porcha Woodruff, 32 and eight months pregnant, at her home as she was getting her children ready for school, charging her with robbery and carjacking.
Case telemetry
- INCIDENT
- SS-IR-030
- DATE
- February 2, 2023
- SYSTEM
- Detroit Police
- LOCATION / SCOPE
- Detroit, Michigan, United States
- EVIDENCE
- Alleged
- AI ROLE
- Decision system
- HARM
- Rights & due process
- SOURCES
- 3 cited records
The event
On February 2, 2023, Detroit police arrested Porcha Woodruff, 32 and eight months pregnant, at her home as she was getting her children ready for school, charging her with robbery and carjacking. The case began when investigators ran gas-station surveillance video of an unidentified woman through Detroit's facial recognition system (the city relied on DataWorks Plus) and got a hit on Woodruff. Detectives built a six-person photo lineup using a roughly eight-year-old image of her, and the victim picked her out. Woodruff was held in custody for about eleven hours, during which she had contractions and was treated for dehydration, then released on a $100,000 bond. On March 6, 2023, prosecutors dismissed the case for lack of evidence, conceding the arrest rested in part on a false facial recognition match. According to the ACLU, Woodruff was the first woman and at least the sixth person known to be wrongfully arrested in the United States because of this technology; all six were Black. It was also the third such wrongful-arrest allegation against the Detroit Police Department in three years.
What the machine did
The facial recognition algorithm produced an investigative lead that was treated as if it were probable cause. The software returned a candidate match against a mugshot database and a stale photo, and rather than a qualified human treating that output as an unverified tip requiring corroboration, officers fed the algorithm's pick straight into a photo lineup and then a warrant. There was no human SME validation gate confirming that an eight-months-pregnant suspect matched a carjacking captured weeks earlier, no check that the comparison image was current, and no review of the documented racial-bias and reliability limits of the system before the match drove an arrest. The algorithm's probabilistic guess flowed end to end into a felony charge with no qualified human standing between the model output and the loss of a person's liberty.
Where the failure landed
An eight-months-pregnant woman was jailed for roughly eleven hours, experienced contractions and dehydration in custody, was charged with two felonies, and had to post a $100,000 bond before the case collapsed a month later. She became the sixth publicly documented person, and the first woman, falsely arrested in the U.S. via facial recognition, and the third tied to Detroit PD, intensifying national scrutiny and ACLU demands that the department stop using the technology. Woodruff sued the city of Detroit; a civil-rights claim against the warrant officer was later dismissed in 2025. Detroit subsequently changed its facial recognition policies, barring arrests based on a facial recognition match alone.
Alleged
Claims reported in litigation or public allegations; not presented here as a final finding.
SOURCE RECORD UPDATED 2026-07-09
3 cited records
- 01
- 02
- 03
Named SME review and decision audit trail
The failure pattern in this case: Automated judgment without accountable review.
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