Tesla CEO Elon Musk says his deal to buy Twitter can’t move forward unless the company shows public proof that less than 5% of the accounts on the social media platform are fake or spam.

Musk made the comment in a reply to another user on Twitter early Tuesday. He spent much of the previous day in a back-and-forth with Twitter CEO Parag Agrawal, who posted a series of tweets explaining his company’s effort to fight bots and how it has consistently estimated that less than 5% of Twitter accounts are fake. READ MORE