Authorities seek a motive in mass shooting at an Idaho In-N-Out Burger

The Twin Falls Police Department is investigating the motive behind a mass shooting at an Idaho In-N-Out Burger. The suspect, 24-year-old Chad Williams, who had Arizona ties and attended the College of Southern Idaho, killed three people and wounded seven others before dying from a self-inflicted gunshot wound. Prior to the attack, Williams reportedly shared chilling social media posts railing against crime. Investigators continue to analyze the events that led to the weekend violence.