Santa Clarita school shooting: teen used unregistered `ghost gun´ in attack
(The Guardian United States)

Authorities are investigating the .45 caliber semi-automatic pistol that Nathaniel Tennosuke Berhow assembled from gun partsThe teenager who shot and killed several classmates at a southern California high school last week used an unregistered `ghost gun`.Sixteen-year-old Nathaniel Tennosuke Berhow assembled a .45 caliber semi-automatic pistol from gun parts and did not have a serial number, the Los Angeles county sheriff, Alex Villanueva, said on Thursday. Authorities do not know who assembled the pistol or bought its components. Continue reading...