Federal Bureau of Investigation agents raided a home in Spring, Texas, on Monday morning in connection with the Molotov cocktail attack on OpenAI CEO Sam Altman's San Francisco residence. The court-authorized search targeted the property linked to 20-year-old Daniel Moreno-Gama, who authorities say traveled from the Houston suburb to carry out the assault early Friday, April 10.

Around 3:45 a.m. PT, Moreno-Gama allegedly approached Altman's home in the North Beach neighborhood, threw an incendiary device that ignited an exterior gate, and fled on foot, causing minimal damage with no injuries reported. Less than an hour later, San Francisco police detained him outside OpenAI's Mission Bay headquarters after he threw a chair at the glass doors and threatened to burn the building down and kill those inside. Officers found him carrying a jug of kerosene, a lighter, and a manifesto described as a three-part document listing names and addresses of AI executives and investors.

Court documents reveal the manifesto expressed opposition to artificial intelligence, citing its risks to humanity and warnings of "impending extinction." Moreno-Gama faces state felony charges including attempted murder, along with federal counts of possession of an unregistered firearm and damage to property by explosives; the Department of Justice planned to file additional charges Monday afternoon.

FBI Houston confirmed the Monday raid but provided no details on evidence collected, as agents spent several hours at the scene gathering materials. Investigators continue to probe Moreno-Gama's possible obsession with AI companies and his mental state.

OpenAI issued a statement thanking San Francisco police for their swift response, noting no one was hurt and offices remained open with heightened security. Altman addressed the incident on his blog, posting a family photo and acknowledging public anxiety over AI while calling for de-escalation: "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."

The attack follows rising tensions around AI development. Advocacy groups like the Future of Life Institute condemned the violence, with executive director Anthony Aguirre stating it has no place in debates over the technology.

Separately, over the weekend, police arrested two individuals after gunfire reports near Altman's home, but authorities described the incident as unrelated with no connection to the CEO or his property. San Francisco Police Chief Derrick Lew emphasized the department's commitment to addressing gun crimes aggressively.

The investigation remains active as federal authorities seek to determine if others were involved.