A gunman opened fire at a crowded In-N-Out Burger restaurant in Twin Falls, Idaho, killing three people, including an employee, before dying from a self-inflicted gunshot wound. Police have identified the attacker as 24-year-old Chad Williams but say they are still working to establish a motive for the shooting, which has shocked the local community and drawn national attention.

Twin Falls Police Chief Matthew Hicks confirmed Williams acted alone and cautioned that social media posts naming a different individual as the suspect were incorrect. An off-duty state trooper and an armed member of the public have been credited with returning fire on the gunman, actions police say helped save lives during the attack. The company's president said her "heart is broken" over the deaths of the employee and customers involved.