June 11, 2015 4:35 pm Poway Explosion Caused By Malfunctioning Machine Three people injured in an explosion at a Poway business have been discharged from the hospital; a fourth person has more serious injuries. NBC 7’s Vanessa Herrera has more on what caused the blast. US & World Videos 2:05 Police find, return dozens of abandoned Amazon packages 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season
