In the wee hours of Saturday morning, the Twitter account of Fox News personality Sean Hannity was deactivated -- leaving his nearly 3 million followers perplexed.

On Friday night, Hannity had tweeted the mysterious "Form Submission 1649" a few hours before the account disappeared.

"Sean Hannity Twitter" and "Form Submission 1649" were among the top middle-of-the-night searches on Twitter.

There were tweets of a deep state conspiracy to silence him, leftist Twitter employees run amuck, liberal hackers, and suggestions Hannity himself manufactured the middle-of-the-night incident as a publicity stunt or distraction from an on-air embarrassment.

On Thursday, Hannity was the subject of widespread mockery from the left on Twitter. He had initially discounted a New York Times story about President Trump ordering the firing of special counsel Robert Mueller and then seemed to accept it later in his show, after a Fox News reporter confirmed it.

His page reappeared shortly after 5 a.m with no explanation.

In November 2017, President Donald Trump's account was deactivated for several minutes. Twitter blamed the brief disappearance on the last day antics of a rogue employee.