Man Faces Attempted Murder Charges In Attack On Home Of OpenAI's Sam Altman

The early-morning attack on the San Francisco home of OpenAI CEO Sam Altman has sent shockwaves through the global technology community, law enforcement circles, and public policy debates around artificial intelligence. In April 2026, U.S. authorities announced that a 20-year-old Texas man faces attempted murder and arson charges after allegedly throwing a Molotov cocktail at Altman’s residence and later threatening OpenAI’s headquarters.

While no one was injured, prosecutors have described the incident as planned, targeted, and extremely serious.

Sources include reporting from the Associated Press, BBC News, Al Jazeera, CNBC, CBS News, ukbreakingnews24x7 and other major outlets.
What Happened: A Timeline of the Attack
According to court documents and law enforcement statements, the incident unfolded in the pre-dawn hours of Friday, April 10, 2026. Prosecutors allege the suspect, identified as Daniel Moreno-Gama, traveled from Texas to San Francisco specifically to target Sam Altman’s home.

Security footage and witness statements show that shortly after 3:30–4:00 a.m. local time, an incendiary device was thrown at the gate of the Russian Hill residence, briefly setting it on fire before the attacker fled on foot. No one inside the home was injured.

Less than an hour later, the same suspect allegedly appeared at OpenAI’s San Francisco headquarters, where he attempted to damage the building by striking glass doors with a chair and verbally threatened to burn it down and kill anyone inside.

He was arrested at the scene by responding officers. Sources: Associated Press, BBC News, CBS News, April 2026.
Charges Filed: State and Federal Cases Explained
San Francisco District Attorney Brooke Jenkins announced that Moreno-Gama faces two counts of attempted murder under California state law—one related to Sam Altman and another connected to a security guard believed to have been present at the residence. Additional state charges include attempted arson and multiple counts related to possession and use of a destructive device.

If convicted on the most serious charges, state prosecutors say he could face a sentence ranging from 19 years to life in prison.

On the federal side, U.S. prosecutors have filed charges that include attempted damage and destruction of property by means of explosives and possession of an unregistered firearm. Federal authorities emphasized that the investigation is ongoing and could expand if evidence supports terrorism-related enhancements.

Sources: Associated Press, Al Jazeera, CNBC, April 2026.
Who Is the Suspect?
Daniel Moreno-Gama is described by authorities as a 20-year-old resident of Spring, Texas, a suburb north of Houston. Law enforcement officials say he traveled alone to California and had allegedly prepared documents outlining his anti-artificial-intelligence views. After his arrest, FBI agents searched his Texas residence as part of the investigation.

Court filings indicate that the suspect had no known personal relationship with Sam Altman or OpenAI employees, suggesting the alleged actions were ideologically motivated rather than personal.