What we know about the In-N-Out Burger shooting suspectThree people were killed and another seven were injured when a gunman opened fire outside an In-N-Out Burger restaurant in Twin Falls, Idaho, on SatuThree people were killed and another seven were injured when a gunman opened fire outside an In-N-Out Burger restaurant in Twin Falls, Idaho, on SatuThree people were killed and another seven were injured when a gunman opened fire outside an In-N-Out Burger restaurant in Twin Falls, Idaho, on SatuThree people were killed and another seven were injured when a gunman opened fire outside an In-N-Out Burger restaurant in Twin Falls, Idaho, on SatuSome details are emerging about the man suspected of opening fire outside an In-N-Out Burger location in Idaho over the weekend, killing three people, as a motive in the mass shooting remains under investigation. The suspect in Saturday's shooting -- 24-year-old Chad Williams -- died from an apparent self-inflicted gunshot wound after police say he opened fire near a busy shopping area in Twin Falls. A bystander video verified by ABC News shows an alleged gunman preparing to open fire on a vehicle, Aug. 1, 2026, near an In-N-Out Burger restaurant in Twin Falls, Idaho. A law enforcement source confirmed that the shooting suspect, Chad Williams, is seen in this photo. College of Southern IdahoThe Twin Falls Police Department said investigators are "confident" the suspect acted alone.