Police have detained three people and recovered at least one gun as part of the investigation into the deadly Super Bowl parade shooting in Kansas City on Wednesday that left 21 people wounded, including at least eight children, and a mother of two dead. At one point, video shows fans tackling a person that may have been a suspect in the shooting. Kansas City Police Chief Stacey Graves could not confirm that, but she did confirm three people have been detained as part of the investigation. The shooting happened outside Union Station in Kansas City, where thousands of people gathered Wednesday to celebrate the Chiefs' win over the San Francisco 49ers on Sunday in Super Bowl LVIII.