He said he wasn't sure if his store - a long nondescript beige brick building next to an auto dealership, with palm trees surrounding the front entrance - had been contacted by law enforcement but said they would cooperate in any investigation.
She collected her gun the same day YouTube Chief Product Officer Neal Mohan and Chief Business Officer Robert Kyncl announced in a blog post that the company was further tightening its rules and raising requirements for creators trying to make ad revenue off their videos.
KGO-TV reported the shooter was believed to be a white woman wearing a headscarf and a dark top, but police did not immediately confirm it. Witnesses told KTVU that the suspect shot her boyfriend before killing herself.
Aghdam also ran a Farsi-language public channel on the messaging app Telegram, which had 6,000 followers.More news: Russian Federation has filed a lawsuit to block Telegram messaging app
He says the family reported her missing Sunday. She then killed herself. Already seething over YouTube's crackdown on videos she routinely posted, Aghdam took the gun home with her on January 16, the same day the internet giant announced a bigger revenue crackdown on content creators like her. On Thursday, the remaining patient's condition was upgraded from serious to fair condition, according to Brent Andrews, a spokesman for Zuckerberg San Francisco General Hospital. The other two gunshot victims, a 32-year-old woman and a 27-year-old woman, were released after spending less than a day at the hospital.
Lee's analysis shows Aghdam's videos had total of about nine million views with 30,000 subscribers - nowhere near what's necessary to be a YouTube star.
Before going to the company's headquarters, she practiced with the weapon, which was registered in her name, at a nearby gun range. At her father's house, one relative said Aghdam came from Iran as a refugee at 18, about 21 years ago.
In an English-language video posted to her YouTube account before the channel was deleted on Tuesday, Aghdam said, "I am being discriminated".
Her father, Ismail Aghdam, brought his family to the United States from Iran in 1996. "If I had to pick neighbors, I'd have them all around".More news: Record-breaking Aussies make waves in pool
She and others hid in a conference room for an hour while another employee repeatedly called 911 for updates. She once told Rundell that her pet rabbit was unhappy and asked where he got his. A woman named Leila who identified herself as an aunt said Nasim Aghdam was a "really good person" and had no history of mental illness.
Some employees returned to the building to help first responders gain access to the facility, YouTube revealed Wednesday. She did not give her last name.
The shooter's family later distributed a statement outside the home saying it was "in absolute shock and can't make sense of what has happened".
"At this time there is no evidence that the shooter knew the victims of this shooting or that individuals were specifically targeted", the statement said.
Aghdam walked onto the YouTube property through a parking garage and it's not clear whether she encountered any security. YouTube promised more security at all of their offices worldwide.More news: Real Madrid-Atletico Madrid Play to Draw in Derby; Cristiano Ronaldo Scores
Aghdam, a vegan who was passionate about fitness and animal rights, was photographed at a PETA protest in San Diego in 2009.