Teen in California high school shooting rampage used 'ghost gun' made from parts

A 16-year-old boy who opened fire at his Southern California high school, killing two classmates and wounding three others before shooting himself in the head, used a "ghost gun" built from parts, the local sheriff said on Thursday.Nathaniel Tennosuke Berhow pulled the .45-caliber semi-automatic pistol from his backpack on Nov. 14, his birthday, and shot students at Saugus High School in the Los Angeles suburb of Santa Clarita seemingly at random before turning the gun on himself.The sheriff tol