Grok, the AI chatbot produced by Elon Musk’s artificial intelligence company xAI, is apologizing for antisemitic comments made on X. The company says that the responses were related to an issue with an update that was made to the code and that they have refactored the entire system to prevent further abuse.

But after the chatbot developed by Elon Musk’s start-up xAI ranted for hours about a second Holocaust and spread conspiracy theories about Jewish people, the company responded by deleting some of the troubling posts and sharing a statement suggesting the chatbot just needed some algorithmic tweaks.