UPDATE: It didn’t take long for Twitter to figure out what happened. A customer support employee deactivated President Trump’s account on his or her last day. It’s unclear whether this was a deliberate act, though Twitter pledges to conduct “a full internal review.”

The act of sabotage briefly knocked the account offline, but Twitter quickly took responsibility for inadvertently deactivating President Donald Trump’s account, which has since been restored.

The president’s personal account, @realDonaldTrump, went dark at about 4 p.m. Thursday, displaying an error message saying the user “does not exist.” It was restored 11 minutes later.

Twitter initially blamed the outage on “human error,” posting a note to the social network that it was investigating to ensure this sort of thing doesn’t happen again.

 Trump’s momentary absence from his digital soapbox of choice didn’t go unnoticed.