"Twitter deal temporarily on hold pending details supporting calculation that spam/fake accounts do indeed represent less than 5% of users," Musk tweeted on Friday.
Since the buyout news, technology stocks have plunged amid investor concerns over inflation and a potential economic slowdown.
Twitter did not immediately respond to a request for comment. There was no immediate reaction from the investors that Musk tapped last week to raise $7.1 billion in funding.
The estimated number of spam accounts on the microblogging site has held steady below 5% since 2013, according to regulatory filings from Twitter, prompting some analysts to question why Musk was raising it now.