By Jonathan Stempel April 27 (Reuters) - The two law firms representing Sam Altman's sister in her sexual abuse lawsuit against the OpenAI chief executive said on Monday they are withdrawing from her case.

OpenAI is facing more scrutiny over how mass shooting suspects are using its chatbot ChatGPT to plan violent attacks.

The already explosive legal fight between OpenAI CEO Sam Altman and his sister Annie Altman has taken another sharp turn in St. Louis federal court, where two law firms that had been representing her in a sexual abuse lawsuit are asking to exit the case.

Sam Altman unveils OpenAI’s guiding principles, but recent controversies test whether the company can deliver on its promises of accountability and safety.