Case luca-walker-uk-inquestChatbot harmUnited Kingdom
UK inquest hears 16-year-old bypassed ChatGPT safeguards before his death
An inquest heard Luca Cella Walker obtained harmful information from ChatGPT hours before his May 2025 death after telling it his questions were for research. The coroner voiced concern about AI.
CriticalHarm caused by AIStatus: ResolvedVerified case file
Open in the interactive mapCite this case
- Reported
- Mar 31, 2026
- Location
- United Kingdom
- Target
- 16-year-old ChatGPT user in Yateley, Hampshire
- Severity
- Critical
- Triggered by
- OpenAI (ChatGPT)
- Actor type
- AI product design / safeguards
- Sector
- Individuals & consumers
- Reported loss
- None reported
- CVE
- None
What happened
An inquest heard Luca Cella Walker obtained harmful information from ChatGPT hours before his May 2025 death after telling it his questions were for research. The coroner voiced concern about AI.
Impact: Death of a 16-year-old on 4 May 2025. Coroner Christopher Wilkinson recorded suicide and said he felt unable to act on AI given its growing scope.
Who triggered it
Actor: OpenAI (ChatGPT)
Attribution: Police evidence at the Winchester inquest said the teen sidestepped crisis prompts and ChatGPT accepted the 'research' framing. No lawsuit reported.
Motive: None; harm alleged to arise from the product's design and safeguards
How it happened
Attack vector: ChatGPT queries framed as research that bypassed built-in Samaritans referral prompts.
Root cause: As heard at inquest: safeguards that could be bypassed by claiming a research purpose.
Timeline
- Luca Cella Walker dies
- Inquest at Winchester coroner's court hears ChatGPT evidence; suicide conclusion recorded
Response
OpenAI said it keeps improving ChatGPT's training to recognise distress, de-escalate and point people to real-world support, working with clinicians.
Current status: Resolved
Sources (open in a new tab)
- The Guardian theguardian.com
- Daily Mirror mirror.co.uk
- OECD AI Incidents Monitor oecd.ai
Cite this case
UK inquest hears 16-year-old bypassed ChatGPT safeguards before his death. AI Threat Watch, case luca-walker-uk-inquest, Mar 31, 2026. https://aithreat.io/cases/luca-walker-uk-inquest/
Permanent link: https://aithreat.io/cases/luca-walker-uk-inquest/