Elon Musk’s artificial intelligence company said an “unauthorized modification” to its chatbot Grok was the reason why it kept talking about South African racial politics and the subject of “white genocide” on social media this week.

Elon Musk’s artificial intelligence tool Grok went haywire for users of the social media platform X on Wednesday, responding to innocuous queries about things like baseball and puppies with information on South Africa and a conspiracy theory called “white genocide.” It was widespread and extremely weird to witness.

After xAI’s chatbot Grok spent a few hours on Wednesday telling every X user that would listen that the claim of white genocide in South Africa is highly contentious, the company has blamed the behavior on an “unauthorized modification” to Grok’s code.