Elon Musk updates his defense against Twitter 1:18
(CNN) --
Twitter is preparing to call Elon Musk to testify on September 26 and 27, as part of his ongoing legal battle over the $44 billion takeover deal, according to a court document in the case.
News of Musk's statement comes as Twitter co-founder and former CEO Jack Dorsey answers questions Tuesday from company attorneys and Musk's legal team.
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Also, as Musk's lawyers expand their case against Twitter.
Earlier this month, a judge ruled that the billionaire could add claims to the case that are based on revelations by whistleblower Peiter Zatko, a former Twitter security chief, who accuses the company of serious security vulnerabilities that put its customers at risk. users, investors and US national security.
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Twitter said that Zatko's allegations raise a "false narrative" of the company and that Musk's claims are "truly inaccurate, legally insufficient and commercially irrelevant."
The two sides will begin a five-day trial on October 17.
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