OSHKOSH, Wis. — A helicopter hit power lines and plunged into the Fox River in eastern Wisconsin Saturday, killing one man.

The Winnebago County Sheriff’s Office says the helicopter went down near the Wisconsin Street Bridge in Oshkosh, 94 miles (151 kilometers) north of Milwaukee after it hit the electrical wires.

Winnebago County Sheriff’s Capt. Lara Vendola-Messer said special equipment had to be brought in by Wisconsin Public Service to help remove the electrical lines from the water.