Elon Musk says a lower price for Twitter is ‘not out of the question.’

Elon Musk threw another curveball at his takeover of Twitter on Monday.

At a technology conference in Miami, Mr. Musk, the world’s richest man, said striking a deal for Twitter at a lower price was “not at the out of the question,” according to a person who attended the event.

Mr. Musk’s comment came in response to a question over whether he would renegotiate his planned $44 billion acquisition of Twitter over its stated figures of how many bots, or spam accounts, exist on the social media service, the attendee said. Mr. Musk said that Twitter’s figure — less than 5 percent of all accounts — was difficult to believe.

Twitter’s shares fell 8 percent on Monday to close at $37.39. That was far below the $54.20 a share that Mr. Musk agreed to pay last month to buy the social media company.

Mr. Musk, who also leads the rocket company SpaceX and the electric automaker Tesla, has unleashed confusion over the state of the deal. Last Friday, he tweeted that his purchase of Twitter was “temporarily on hold” until he could get more details about the volume of spam and fake accounts on the platform. He later followed up saying he was still “committed” to the deal.