Gunman Who Killed 4 People, Including Child in Mass Shooting at Orange County, CA Business Complex Identified as Aminadab Gaxiola Gonzalez Friday, April 2, 2021 By Stillness in the Storm Leave a Comment (Cristina Laila) Orange County- A gunman killed 4 people, including a 9-year-old boy Wednesday night in a mass shooting at a business complex in Orange, California.