This still image captured from video by a witness shows the scene of a shooting that started at an In-N-Out Burger restaurant, Saturday, Aug. 1, 2026 in Twin Falls, Idaho. (Kevin Bell Jr. via AP)This image provided by KMVT shows the scene of a shooting that started at an In-N-Out Burger restaurant, Saturday, Aug. 1, 2026 in Twin Falls, Idaho. Police Chief Matthew Hicks said Sunday detectives are confident that the gunman, identified as Chad Williams, acted alone in the shooting Saturday at an In-N-Out Burger in Twin Falls, a southern Idaho city of about 56,000 people. An off-duty state trooper and a civilian fired on the attacker and diverted him from the restaurant, the chief said. Twin Falls spokesperson Josh Palmer said Monday that police are still trying to identify next of kin.