Texas Man Charged with Attempted Murder in Molotov Attack on Sam Altman

A Texas man now faces the possibility of life in prison after authorities say he traveled to San Francisco, threw a Molotov cocktail at OpenAI CEO Sam Altman's home before dawn, then threatened to burn down the company's headquarters and kill those inside. No one was hurt. Yet the episode has exposed the sharp edge where abstract fears about artificial intelligence meet real-world violence.

The sequence unfolded rapidly in the early hours of April 11, 2026. At 3:37 a.m., surveillance cameras captured a figure in dark clothing approaching Altman's residence on Chestnut Street in Russian Hill. He hurled an incendiary device that struck the metal gate and started a small fire, according to the federal criminal complaint and San Francisco police reports. The suspect fled on foot. Less than 90 minutes later, the same individual allegedly arrived at OpenAI's offices roughly three miles away, smashed a glass door with a chair, and told security personnel he intended to burn the building and kill everyone inside. Officers arrested Daniel Moreno-Gama, 20, of Spring, Texas, at the scene. They recovered incendiary devices, a jug of kerosene, a blue lighter and a document outlining his opposition to AI.

That document, described across court filings as containing multiple sections, discussed AI's risk to humanity and "our impending extinction." It listed names and addresses of AI executives and investors. One passage, cited in the complaint, reads: "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." Authorities say the writings identified Altman as a target. The FBI later executed a search warrant at Moreno-Gama's family home in Spring, Texas, spending hours gathering evidence. Federal prosecutors charged him with possession of an unregistered firearm and attempted damage and destruction of property by means of explosives. Those counts carry up to 10 and 20 years respectively.

In state court, San Francisco District Attorney Brooke Jenkins charged Moreno-Gama with two counts of attempted murder—one for Altman, one for a security guard at the residence—plus attempted arson and related explosives offenses. Jenkins described the acts as "willful, deliberate and premeditated." She noted penalties ranging from 19 years to life. FBI San Francisco Acting Special Agent in Charge Matt Cobo called the operation "planned, targeted and extremely serious." Several outlets reported U.S. Attorney Craig Missakian stating authorities would treat the case as domestic terrorism if evidence showed an attempt to alter public policy through violence; that specific phrasing could not be independently verified in official DOJ transcripts or releases.

Altman addressed the attack directly on his blog hours afterward. He shared a photo of his husband and their toddler, writing that the family usually maintains privacy but he hoped the image might dissuade the next person from throwing a Molotov cocktail "no matter what they think about me." He acknowledged that "fear and anxiety about AI is justified" while urging de-escalation of rhetoric and tactics. The attack occurred days after a New Yorker profile examining concerns about Altman and OpenAI, and amid broader debate over AI assistants like ChatGPT now used by millions.

Advocacy organizations long critical of unchecked AI development moved quickly to condemn the violence. Anthony Aguirre, president of the Future of Life Institute, stated that "violence and intimidation of any kind have no place in the conversation about the future of AI." PauseAI noted that Moreno-Gama had joined its Discord server roughly two years earlier, posting about 34 messages; none contained explicit calls to violence though one was flagged internally as ambiguous. The platform subsequently banned him for off-platform behavior. A Stanford University AI Index report released the same day found that while most people believe AI's benefits outweigh its drawbacks, nervousness is growing and trust in institutions to manage the technology remains uneven.

Moreno-Gama remained in San Francisco County Jail awaiting court appearances. Online records did not list an attorney for him as of Monday. The case arrives as Silicon Valley executives increasingly weigh personal security against their public roles in shaping one of the most consequential technologies of the century. Exactly how isolated this incident proves to be remains an open and urgent question.