San Francisco police arrested a 20-year-old man early Friday, April 11, 2026, following an attack involving a Molotov cocktail thrown at the home of OpenAI CEO Sam Altman. The incident occurred around 4:12 a.m. in the city's North Beach/Russian Hill neighborhood. Officers responding to a fire call found an incendiary device had been thrown at an exterior gate of Altman's residence, starting a fire but causing only minimal property damage and, thankfully, no injuries.
Approximately an hour later, the same suspect was identified near OpenAI's headquarters at 1455 Third Street, where he allegedly threatened to burn down the building. Police detained him at that location. An OpenAI spokesperson confirmed both incidents, stating, "Early this morning, someone threw a Molotov cocktail at Sam Altman’s home and also made threats at our San Francisco headquarters." The company expressed gratitude for the swift police response and confirmed it is fully cooperating with the ongoing investigation.
In a blog post, Altman addressed the attack, acknowledging public criticism of AI often stems from "sincere concern about the incredibly high stakes of this technology." He added, "While we have that debate, we should de-escalate the rhetoric and tactics and try to have fewer explosions in fewer homes, figuratively and literally."
The attack occurs amidst heightened tensions surrounding artificial intelligence development and growing scrutiny of Altman's leadership. It follows a recent major investigative report by the New Yorker that portrayed Altman as an untrustworthy leader and comes as OpenAI faces legal pressure, including fraud claims from co-founder Elon Musk seeking his removal. Just last month, OpenAI's San Francisco offices were locked down due to a separate violent threat from an anti-AI activist.
San Francisco police have not released the suspect's name or a public motive. Charges are pending as the investigation remains active. OpenAI increased security at its offices, which remained open following the incident.
