TORONTO, April 25 -- OpenAI's CEO Sam Altman has apologised to a Canadian town devastated by a February mass shooting, saying he was "deeply sorry" the company did not notify police about the killer's troubling ChatGPT account.

OpenAI had banned an account linked to Jesse Van Rootselaar in June 2025, eight months before the 18-year-old transgender woman killed eight people at her home and a school in the tiny British Columbia mining town of Tumbler Ridge.

The account was banned over concerns about usage linked to violent activity, but OpenAI said it did not inform police because nothing pointed toward an imminent attack.

Canadian officials condemned OpenAI's handling of the case and summoned company leaders to Ottawa to explain its sec...