A couple of hours later, Lavrusik returned to Twitter to say his account had been restored.
HuffPost reporter Sebastian Murdock said he was approached on Twitter on Tuesday afternoon by someone claiming to be a YouTube intern.
“I believe I have info on who the shooter is,” the Twitter user said.
Soon after reaching out to Murdock, the user changed their account details, including the name (to “Jack Sebastian”) and description (to “Intern at YouTube HQ”).
Murdock reported the account, which has since been scrubbed of the fake material.
Twitter acknowledged on Tuesday that misinformation had been spread on the platform in the hours after the shooting at YouTube.
Dorsey said the company was “tracking, learning, and taking action” in response to the many hoaxes.
“We‘re working diligently on product solutions to help,” he added.
Information about the suspected female shooter and her motive remains scarce.
San Bruno Police Chief Ed Barberini said the shooter appeared to have died of a self-inflicted gunshot wound. At least three other people were wounded in the attack, officials said.