According to a filing with the US government, Elon Musk, the world’s richest man, has completed his $44bn (£38.1bn) takeover of Twitter. Mr Musk announced on Twitter that “the bird is freed” and later tweeted “let the good times roll”. Several top executives, including CEO Parag Agrawal, have reportedly been fired, and the completion of the deal ends months of legal disputes but raises concerns about the platform’s future direction. A filing with the US Securities and Exchange Commission confirmed the takeover, and the New York Stock Exchange suspended trading in Twitter’s shares, citing “merger effective”. According to US media reports, CFO Ned Segal, Vijaya Gadde, the firm’s top legal and policy executive, and Mr Agrawal are all leaving. Mr Musk, who has been critical of Twitter’s moderation policies, clashed with the platform’s management over the takeover terms. There has been speculation among Twitter users about what changes Mr Musk’s ownership will bring.