Motive of Las Vegas Shooter Still a Mystery

Law enforcement and family members still cannot explain what would motivate a one-time accountant with no known criminal record to carry out the attack that left 59 dead and wounded more than 500 others. NBC's Sarah Dallof reports.

(Published Wednesday, Oct. 4, 2017)

Law enforcement and family members still cannot explain what would motivate a one-time accountant with no known criminal record to carry out the attack that left 59 dead and wounded more than 500 others. NBC's Sarah Dallof reports.