Elon Musk’s bid to purchase Twitter has been put on hold over concerns about his ability to arrange new financing that would limit his cash contribution to the $44 billion acquisition amid his threats to walk away from the deal, according to media reports.

The SpaceX and Tesla CEO has threatened to walk away from the deal over Twitter’s alleged refusal to provide him information about spam bots and fake accounts on the social media platform.

In a letter to Twitter on Monday, Musk’s lawyers wrote they have repeatedly asked for the information since May 9, about a month after his offer to buy the company, so he could evaluate how many of the company’s 229 million accounts are fake.

Musk has long been fixated on Twitter’s bot problem as a reflection of the platform’s true value. He has more than 97 million followers.

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