A disturbed man who opened fire randomly at people in his Philadelphia neighborhood Monday night used an AR-15 made completely from unregistered parts, known as a "ghost gun," according to police.
On social media, the shooter recently posted support for the Second Amendment rights and Biblical quotes. The oldest person killed in the attack was 59; the youngest was 15. Two others were injured by shattered glass in the shooting. One of those wounded was two years old. Philadelphia District Attorney Larry Krasner told CNN that the guns were likely obtained illegally.