It's not clear whether they mean authorities for their US HQ or the French authorities.
But I can't find any announcement of the follow-up. Is there a case open against OpenAI the company? Is their management interviewed by the authorities? Anyone detained yet?
I guess the people who left the model running unattended risk at least a suspended sentence here in France.
Where are concerned citizens making inquiries on this matter and reporting in their viral blogposts?