Man accused in Molotov cocktail attack of OpenAI CEO's home charged with attempted murder

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"This was not spontaneous. This was planned, targeted and extremely serious," said FBI San Francisco Acting Special Agent in Charge Matt Cobo during a press conference.

No one was injured at Altman's home or the company offices, authorities said.

Moreno-Gama faces state and federal charges

Moreno-Gama faces charges including two counts of attempted murder and attempted arson in California state court, San Francisco District Attorney Brooke Jenkins. He tried to kill both Altman and a security guard at Altman's residence, she alleged. He is set to appear in court Tuesday, and online state court records do not yet show if he has an attorney.

Jenkins said the state charges carry penalties ranging from 19 years to life in prison.

On Monday morning, FBI agents went to Moreno-Gama's home in Spring, Texas, a suburb of Houston, where they spent several hours before leaving. He has been charged by federal prosecutors with possession of an unregistered firearm and damage and destruction of property by means of explosives. Those charges carry respective penalties of up to 10 years and 20 years in prison.

The federal court documents do not list an attorney for Moreno-Gama, and he has not yet had his first appearance in federal court.

Authorities allege Moreno-Gama traveled from his home in Texas to San Francisco and visited Altman's home early Friday morning.

Authorities say Moreno-Gama was opposed to artificial intelligence

When Moreno-Gama was arrested Friday, officials found a document on him in which he "identified views opposed to Artificial Intelligence (AI) and the executives of various AI companies," court documents say. The document discussed AI's purported risk to humanity and "our impending extinction," according to the criminal complaint.

Surveillance video images included in the criminal complaint show a person dressed in a dark hoodie and pants that the FBI alleges is Moreno-Gama approaching the driveway of Altman's home. In various images, the person can be seen tossing the Molotov cocktail, which landed at the top of a metal gate and started a small fire.

Surveillance video images from outside OpenAI's headquarters allegedly show Moreno-Gama grabbing a chair and using it to hit a set of glass doors. Authorities said Moreno-Gama was approached by the building's security personnel, who told investigators he "stated in sum and substance" that he came to the headquarters "to burn it down and kill anyone inside," according to the complaint.

San Francisco police arrested Moreno-Gama and recovered "incendiary devices, a jug of kerosene, a blue lighter, and a document." Moreno-Gama was being held Monday in the San Francisco County Jail on the state charges, and was expected to appear in court on Tuesday.

U.S. Attorney Craig Missakian said authorities "will treat this as an act of domestic terrorism, and together with our partners, prosecute him to the fullest extent of the law."

Authorities say Moreno-Gama's anti-AI document contained threats against Altman

The document in which Moreno-Gama discussed his opposition to AI also made threats against Altman, officials said.

"Also if I am going to advocate for others to kill and commit crimes, then I must lead by example and show that I am fully sincere in my message," Moreno-Gama is alleged by authorities to have written in the document.

Advocacy groups that have issued grave warnings about AI's risks to society condemned the violence.

Anthony Aguirre, president and CEO of the Future of Life Institute, said in a written statement Friday that "violence and intimidation of any kind have no place in the conversation about the future of AI."

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Another group, PauseAI, said in a statement that the suspect had no role in the group but joined its forum on the social media platform Discord about two years ago and posted about 34 messages there, none containing explicit calls to violence but one that was flagged as "ambiguous."

Discord said Monday that it has banned Moreno-Gama for "off-platform behavior."

Altman addressed the threats in a blog post

Hours after the attack on his house, Altman posted a photo of his husband and their toddler in a blog post addressing the threats against him.

"Normally we try to be pretty private, but in this case I am sharing a photo in the hopes that it might dissuade the next person from throwing a Molotov cocktail at our house, no matter what they think about me," Altman wrote.

He added that "fear and anxiety about AI is justified" but it was important to "de-escalate the rhetoric and tactics and try to have fewer explosions in fewer homes, figuratively and literally."

Altman has become a preeminent voice in Silicon Valley on the promise and potential dangers of artificial intelligence. The attack comes days after The New Yorker published an in-depth investigation that touched on concerns some people have about him and the company.

Debate about the impact of AI is growing

The attack came at a time of growing debate about the societal effects of AI assistants like OpenAI's ChatGPT that millions of people are turning to for information, advice, writing help and to do work on their behalf.

An annual report published Monday by Stanford University called the AI index found that most people believe AI's benefits outweigh its drawbacks, "but nervousness is growing and trust in institutions to manage the technology remains uneven."