MAQUOKETA, Iowa -- Authorities said four people are dead and a triple-homicide investigation is underway at Maquoketa Caves State Park today. Mike Krapfl, special agent in charge with the Iowa Division of Criminal Investigation, said members of the Jackson County Sheriff's Department responded at 6:23 a.m. to reports of gunshots at the park's campground. A DCI press release states that Jackson County deputies and the state agency were notified at that time of a triple homicide. Law enforcement officials located three people dead at the scene, though Krapfl could not confirm their cause of death. He said officials still were...