Molotov cocktail thrown at home of OpenAI CEO Sam Altman

A suspect was arrested in San Francisco Friday after being accused of throwing a Molotov cocktail at the home of Sam Altman, the CEO of the artificial intelligence firm OpenAI.

The 20-year-old man was found at the OpenAI headquarters about three miles away from Altman’s home, where he was threatening to burn down the building, San Francisco police said.

The device the suspect threw onto Altman’s property in the Russian Hill neighborhood caused a fire on the exterior gate. It was unclear whether Altman and his family were at home.

The suspect was in custody Friday, with charges pending.

Altman’s company and other companies have been under fire as AI has expanded rapidly at President Donald Trump’s urging, with the president issuing an executive order attacking states’ ability to regulate the industry.

Experts have warned the expansion of generative AI threatens jobs and democracy, with political campaigns already using the technology to create fraudulent media in advertisements.

Massive, energy-sucking AI data centers have also been blamed for higher household electricity bills and water consumption.

Protesters have rallied against Altman’s company for agreeing to provide its technology to the Department of Defense.

In November, The New York Times reported, a person who had once been associated with the anti-AI group Stop AI “expressed interest in causing physical harm to OpenAI employees,” causing the company to lock down its headquarters.

On Friday, Stop AI condemned the attack on Altman’s house and emphasized that the group “seeks to protect human life.”

“We do not condone any violence whatsoever,” said the group. “We pray everyone involved in this situation puts aside violence and finds peace, and we continue to hope the AI industry stops the development of frontier AI systems in the interest of public safety and the preservation of humanity. To the best of our knowledge, this incident did not involve anyone who has ever been associated with our group. And this action is wholly inconsistent with our values.”