The death of a Missouri man in an Arrowhead Stadium parking lot during Kansas City's game this weekend was ruled a homicide Wednesday, but police said it could still take weeks before they know what killed him. Kyle Van Winkle, 30, of Smithville, was unconscious on the ground when police responded to a disturbance call around 5:20 p.m. Source: Fox Sports Sad story. They still don't know the cause of death and don't have any suspects right now apparently.