https://www.mercurynews.com/2019/07/29/what-we-know-about-the-suspect-in-the-gilroy-garlic-festival-shootings/

Santino William Legan, the 19-year-old identified by police as the teen who shot dead at least three people Sunday evening at the Gilroy Garlic Festival was a 2017 graduate of Gilroy High School who had lived with his parents in an unassuming suburban home, bought an assault rifle legally in Nevada this month and apparently cut through a security fence to carry out the seemingly random killings.

Legan opened fire with what police described as an SKS AK-47-type rifle at the close of the three-day festival before he was killed in an exchange of gunfire with three Gilroy police officers.