In a letter to the company, filed Friday with the Securities and Exchange Commission,
Elon Musk's twitter takeover
Musk accuses Twitter of making "false and deceptive representations" about the prevalence of fake accounts on its platform.
He says the company has not complied with its obligations to share data and information that he says he desires to evaluate its business.
"Sometimes Twitter has ignored Mr. Musk's requests, sometimes it has rejected them for reasons that appear to be unjustified,
and sometimes it has claimed to comply while giving Mr. Musk incomplete or unusable records," Musk's lawyer, Mike Ringler, wrote.
Legal experts say this could not be sufficient grounds to break off the $44 billion deal without Musk being on the hook for a hefty fine.
In response to Musk's letter, the chair of Twitter's board stated it planned to sue.
Elon Musk's twitter takeover
"The Twitter Board is committed to closing the transaction on the price and terms agreed upon with Mr. Musk and plans to pursue legal action to enforce the merger agreement.
We are assured we are able to prevail in the Delaware Court of Chancery," said Bret Taylor in a tweet, referring to a Delaware court that handles corporate disputes.
The sides signed a legal agreement that Musk would purchase Twitter for $54.20 a share. If either party broke off the deal, they could be on the hook to pay a $1 billion price to the other party.
In his letter on Friday, Musk cites Twitter's alleged refusal to turn over more information about bots as grounds to abandon the deal.