The executives fired include CEO Parag Agrawal, chief financial officer Ned Segal, top legal and policy executive Vijaya Gadde, and general counsel Sean Edgett.

At least one of the fired executives was seen escorted out of Twitter’s San Francisco headquarters, per the sources.

Insider reached out to Musk, Agrawal, Segal, Gadde, Edgett, and Twitter for comment.

Musk, who wanted to walk away from his initial offer to purchase Twitter for $44 billion, made a U-turn on the offer in October.

Musk shared a video of his entrance at the headquarters this week and met with workers while having impromptu conversations with them, Insider reported.

His acquisition of the social media platform sparked concerns among employees. One shared with Insider what it was like before Musk reached the deadline to close the deal.