Twitter co-founder and Chief Executive Officer Jack Dorsey’s account on the social networking site was briefly suspended on Tuesday, sparking speculation that he had been sacked from his post or that his account had been hacked. Around 7.30am (IST) Twitter users were stumped when they got a “this account has been suspended” message while trying to access Dorsey’s account.

Dorsey had 3.91 million followers, and had tweeted more than 20,000 times before his account experienced what he later said was a technical glitch. His account was restored after around 30 minutes later. Dorsey then tweeted, “Just setting up my Twitter…again (account suspension was an internal mistake),” in a reference to his first tweet in 2006.

Twitter users can deactivate their accounts, but only the platform can suspend them. The company has recently suspended a number of accounts citing various reasons. Last week, the site was was criticised for suspending the accounts of so-called “alt-right” users, which white nationalist Richard Spencer referred to as “corporate Stalinism”, Gizmodo reported .

The platform also suspends accounts when users alert them about a hacking or if the users have been posting spam or abusive tweets. In July, Dorsey’s account was targeted by hacker group OurMine.