Nov. 21 (UPI) -- The teenager who opened fire at a Southern California high school last week killing two people used unregistered parts to build what sheriff's officials are describing as a "ghost gun."
Los Angeles County Sheriff Alex Villanueva on Thursday said the shooter, Nathaniel Berhow, used a "kit gun" to carry out the shooting Nov. 14 at Saugus High School in Santa Clarita. Police said the 16-year-old used the .45-caliber gun to shoot five classmates, killing two, before turning the gun on himself.