A detective at England's Derbyshire Police is under criminal investigation over the alleged use of an AI chatbot to produce evidential material in several cases. The inquiry, for perverting the course of justice, has put convictions for sexual offences, including rape, under review.
Derbyshire Police · UK Criminal Justice
UK Opens First Criminal Probe Into an Officer's Alleged Use of AI to Create Evidence
A detective has been removed from frontline duties and is suspected of perverting the course of justice. Several rape convictions are now being re-examined with the Crown Prosecution Service.
1st
UK criminal investigation into an officer's own alleged AI use to make evidence
0
Arrests made — no figures given for the cases under review
RASSO
Evidence-heavy rape & serious sexual offence cases at the core of the review
The Case At A Glance
Allegation
Perverting the course of justice
AI Use
Creating evidential material
Response
Officer off frontline; reviewing cases with CPS
AI Product
Not disclosed — generic "AI chatbot"
How A Conviction Comes Under Threat
When AI output with no factual basis enters the case file, the chain of reliability breaks.
AI generates material
possibly fabricated / hallucinated
→
Evidence reliability undermined
justice contaminated
→
Convictions re-tested
risk of retrials
The Promise
Faster drafting of documents
Summarising large volumes of digital evidence
Easing the psychological toll on detectives in sex-crime inquiries
The Peril
Input to public chatbots is "published to the world"
Unsuited to legal analysis
Hallucinated output can perverting justice and force retrials
The Wider Shift
UK policing has been told to hit pause on AI-generated court statements over reliability fears.
Several forces have been instructed by the National Police Chiefs' Council AI lead to stop using AI-generated statements. The scope of the Derbyshire review will be defined with the CPS, with transparency and reliability safeguards now set to become a renewed focus.
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