Description: In May 2025, a 16-year-old boy stabbed three 14-year-old girls at Vähäjärvi School in Pirkkala, Finland. Same-day reporting said a manifesto attributed to the suspect claimed he used ChatGPT while planning the attack. Later court reporting said police found hundreds of pre-attack searches or queries described as involving AI, including topics related to stabbing, anatomy, school attacks, police procedures, evidence concealment, and manifestos.
Editor Notes: Timeline note: This incident occurred on 05/20/2025; the incident ID was created 05/13/2026.
Entities
View all entitiesAlleged: OpenAI and AI search technology developers developed an AI system deployed by Pirkkala school stabbing suspect and OpenAI, which harmed Vähäjärvi School pupils , Vähäjärvi School community and Pirkkala school stabbing victims.
Alleged implicated AI systems: ChatGPT and AI search technology
Incident Stats
Incident ID
1489
Report Count
1
Incident Date
2025-05-20
Editors
Daniel Atherton
Incident Reports
Reports Timeline
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A 16-year-old boy is in custody after stabbing three female pupils at Vähäjärvi School in Pirkkala on Tuesday morning. Police confirmed the suspect was a student at the school. The victims, all fellow pupils, sustained non-life-threatening…
Variants
A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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