Three people were killed and the suspected gunman was killed in a shooting at a state park in eastern Iowa early Friday morning, police said.
Mike Krapfle, special agent in charge of the Iowa Division of Criminal Investigation, said in a statement that officers responded to a report of shots fired at Maquoketa Cave State Park Campground just before 6:30 a.m.
Mr. Krapfle said officers responding to reports of a shooting found three people dead at the scene, but did not say how they died and did not release their identities.
Officers searching the campground later found the body of a Nebraska man who had died of a self-inflicted gunshot wound, he said.
Authorities identified him as 23-year-old Anthony Sherwin.
The camp ground was evacuated after the firing.
A children’s summer camp at the site, Camp Shalom, said in a Facebook post that parents had been notified and that it had set up a pick-up site for campers.
Camp Shalom officials said they accounted for all campers.
Mr Krapfle said the park was closed but there was no longer a threat to the public.