Elon Musk is under a federal investigation related to his $44bn (€45bn) takeover deal for Twitter, the social media company said in a court filing made public yesterday.
Twitter said it requested that Mr Musk's attorneys produce their communications with federal authorities months ago, but they had not done so, and asked a Delaware judge to order the attorneys to provide the documents.
In late September, Mr Musk's attorneys provided a "privilege log" identifying documents to be withheld from discovery.
The log referenced drafts of a 13 May email to the US Securities and Exchange Commission (SEC) and a slide presentation to the Federal Trade Commission, Twitter said.
An attorney for Mr Musk did not immediately respond to a request for comment.
The court request was filed on 6 October, the same day the court granted a stay of litigation to allow Twitter and Mr Musk to close the takeover deal.
The SEC has questioned Mr Musk's comments about the Twitter acquisition.
In April, the SEC asked Mr Musk whether the disclosure of his 9% Twitter stake was late and why it indicated that he intended to be a passive shareholder.
Mr Musk later refiled the disclosure to indicate he was an active investor.
In June, the SEC asked Mr Musk in a letter whether he should have amended his public filing to reflect his intention to suspend or abandon the deal.
