WATERLOO — A man drowned at a state park in northeastern over the weekend, authorities there said.

The incident happened around 6:30 p.m. Sunday in George Wyth Lake at George Wyth State Park between Waterloo and Cedar Falls, police in Waterloo said. First responders called to the scene used boats and dive teams to find the man and pull his body from the lake.

Witnesses told authorities the man was swimming with friends when he went under the water and didn’t resurface.

The man’s name had not been released by Monday morning.