Three people were killed and seven injured after 24-year-old Chad Williams opened fire at an In-N-Out Burger in Twin Falls, Idaho, on Saturday.
Healthcare worker Jordan Salinas, 35, confronted the gunman with his own pistol, joined by an off-duty police officer, before the suspect was found dead nearby.
The victims included an In-N-Out employee, and police are currently investigating the incident which occurred around 2:30 p.m. local time.