San Bruno Police Commander Geoff Caldwell said Aghdam legally bought the 9mm handgun January 16, and it was registered in her name.
The woman who shot three people at YouTube's headquarters legally purchased her handgun and reloaded during the attack before turning the firearm on herself, according to multiple reports.
"I looked down and saw blood drips on the floor and stairs".
'It's not like she stood out. In the early morning hours the day of the shooting, a police unit in the Bay Area, which is about a half-hour south of YouTube's headquarters, found her sleeping in her auto. She operated multiple YouTube accounts where she posted videos in English, Farsi and Turkish.
Nasim Aghdam, an Iranian native who was in her late 30s, posted the videos under the online name Nasime Sabz, and a website in that name decried YouTube's policies, saying the company was trying to "suppress" content creators.
Police have previously said Aghdam went to a gun range before arriving at YouTube.
Police are investigating a site that appears to show the same woman lambasting YouTube for restricting her videos, though authorities have not confirmed the site belonged to Aghdam.
"There is no equal growth opportunity on YOUTUBE or any other video sharing site, your channel will grow if they want to!" one post reads.More news: Sugar Tax: UK government's sugar tax comes into effect
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People in Iran expressed pity and shock that Aghdam, who was upset at what she called restrictive YouTube policies, would resort to shooting others. Now, remember, this happened in an open courtyard at YouTube's headquarters during lunch.
In the GMA interview that aired Friday morning, Ismail Aghdam and his wife fought back tears as they methodically said "no" to questions from ABC News reporter Matt Gutman to questions about whether their daughter was a terrorist, was violent, or had a gun. In at least one video, Aghdam said the change was akin to censorship of the views she espoused, which were headlined by her vegan and animal-rights activism but also included a heavy dose of dancing and exercise exhibitions. She was found with two magazines and the pistol. Nasim Aghdam had no criminal record.
One of the victims, a 36-year-old man, was listed in critical condition at San Francisco General Hospital.
Several San Bruno police officers on Wednesday spent almost two hours at Jackson Arms, a South San Francisco range.
Police have said that she shot and wounded three people before she killed herself on Tuesday.
Just before 2 a.m. on Tuesday, officers patrolling the community of Mountain View, a suburban town that serves as the headquarters of search giant Google and software firm Symantec, spotted Aghdam's vehicle in a parking lot not far from a Whole Foods and 24 Hour Fitness.
"Looking at her view count. this isn't necessarily someone who screams this is a person making a lot of money from advertising", Lee said. "He did not seem concerned that she was in the area, and wanted to simply let us know that may have been a reason for her move up here", police stated.
Two women wounded by a shooter at YouTube headquarters near San Francisco have been released from a hospital. She gave no indication she was a threat to herself or others.