Jared Lee Loughner is an American mass murderer who pled guilty to 19 charges of murder and attempted murder in connection with the January 8, 2011, Tucson shooting, in which he shot and severely injured U.S. Representative Gabby Giffords, and killed six people, including Chief U.S. District Court Judge John Roll, Gabe Zimmerman, a member of Giffords' staff, and a 9-year-old girl, Christina-Taylor Green. Loughner shot and injured a total of 13 people, including one man who was injured while subduing him.