Multiple people were killed in a shooting at an In-N-Out Burger restaurant in Twin Falls, Idaho, and the suspected gunman is also dead, police said. Twin Falls Police Chief Matthew Hicks said the shooter was among the dead but that authorities were still working to determine the shooter's identity and motive. The shooting took place at the fast-food restaurant in southern Idaho, according to officials. Police did not immediately provide a precise number of victims or details about the circumstances of the attack. The investigation is continuing, and authorities have not released further information about those killed or the sequence of events. The incident is one of the latest in a string of mass shootings in the United States, though officials have not commented on a possible motive.