[custom_adv] US media say Aghdam was angry that YouTube was filtering her videos and reducing the money she could make. [custom_adv] Tuesday's attack left a man and two women injured with gunshot wounds. The attacker shot herself dead. The AP initially reported police were investigating the incident as a domestic dispute. There's no evidence Aghdam knew the victims or that anyone was specifically targeted. [custom_adv] Police in San Bruno, California, say there is no evidence yet that the attacker knew the victims, a 36-year-old man said to be in a critical condition, and two women aged 32 and 27.On her website she also ranted against YouTube, saying: "Videos of targeted users are filtered and merely relegated, so that people can hardly see their videos." [custom_adv] She also quotes Adolf Hitler, saying: "Make the lie big, make it simple, keep saying it, and eventually they will believe it." [custom_adv] She also wrote: "There is no equal growth opportunity on YouTube or any other video sharing site. Your channel will grow if they want to!" [custom_adv] Aghdam's father, Ismail, told local US media she was angry because YouTube had stopped paying her for videos. The shooter left three people wounded before taking her own life with a 9 mm Smith & Wesson handgun. [custom_adv] Video posters can receive money from linked advertisements but the company can "de-monetise" channels for various reasons, taking adverts off. It is unclear if this happened with Aghdam's material. [custom_adv] Her father said Aghdam had been reported missing on Monday after not answering calls for two days. Police later found her sleeping in her car in Mountain View, 25km (15 miles) south of the YouTube offices in San Bruno and reported this to her family, but they did not detain her. [custom_adv] As he headed toward the exit, someone informed him there was a person with a gun. He looked down and could see blood drops on the floor and stairs. [custom_adv] He first thought it was an earthquake. But when he left the room, he saw more people running and figured it was not some kind of drill. [custom_adv] Aghdam's father told the Bay Area News Group he warned police his daughter might be going to YouTube headquarters because she "hated" the company, the Associated Press reports. He says she was angry because YouTube stopped paying her for videos she posted on the platform. [custom_adv] Police say they are investigating a motive for the shooting. "It's believed the suspect was upset with the policies and practices at YouTube," Police Chief Ed Barberini said Wednesday.