OpenAI CEO Sam Altman has apologised for the AI company’s failure to alert law enforcement agencies about warning signs linked to a teenager who later carried out one of Canada’s recent deadliest mass shootings. 

The apology came after more than two months of attack in which 18-year-old Jesse Van Rootselaar killed her mother and half-brother before opening fire at a secondary school in Tumbler Ridge, British Columbia, leaving five children and a teacher dead, according to multiple reports.