Lurie also reportedly told cops she witnessed the acts of domestic violence. The witness told Vicencio that if he was thinking about killing anyone "not to do it," the affidavit reportedly said. After the killings, the witness said Vicencio used their computer to "search for information about murders in San Jose." In 2019, he was accused of shooting at the Martin Luther King Jr. library and parking garage at San Jose State University. His father told the San Jose Mercury News at that his son had a "fascination with guns" and mental health problems.