A federal judge on Monday rejected Elon Musk’s bid to dismiss a recent jury verdict finding that the world’s richest person defrauded Twitter investors when buying the social media company, despite finding that Musk was not liable for one of his challenged tweets.

U.S. District Judge Charles Breyer in San Francisco also denied Musk’s motion to decertify the class of investors, and granted the investors’ motion for prejudgment interest.

(Reporting by Jonathan Stempel in New York, Editing by Franklin Paul)