SACRAMENTO—The gunman who killed his three daughters, a chaperone who was supervising his visit with the children, and himself in a Northern California church this week was in the United States illegally, immigration officials said Friday.
David Mora, 39, was armed with what is often called a “ghost gun,” an unregistered, homemade semiautomatic rifle-style weapon. He had an illegal 30-round ammunition magazine and 17 bullets were fired, the Sacramento County Sheriff’s Office said.
