Three people were killed in a shooting at a state park in eastern Iowa Friday morning and the suspected gunman is also dead, police said.

Police responded to reports of the shooting at the the Maquoketa Caves State Park Campground before 6:30 a.m., Mike Krapfl, special agent in charge of the Iowa Division of Criminal Investigation, said in a statement. …

He said officers searching the campground later found the body of a Nebraska man who had died from a self-inflicted gunshot wound. Authorities identified him as 23-year-old Anthony Sherwin.