LAKE DELTON, Wis. (AP) — Authorities say a carbon monoxide leak during a junior hockey game at a Wisconsin ice rink sent dozens of people to area hospitals.

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The Wisconsin State Journal reports at least 81 people have been treated for symptoms of carbon monoxide poisoning after the leak was discovered at Poppy Waterman Ice Rink in Lake Delton.

The Delton Fire Department says players reported having headaches, dizziness and nausea after a game between the Dells Ducks and the Rochester Ice Hawks Saturday night.

According to a tweet from Ice Hawks coach Nick Fatis, 25 members of the team were sent to the hospital for treatment before being sent home.

The Minnesota Junior Hockey League says one Ducks player is receiving oxygen therapy at a hyperbaric chamber in Milwaukee.

Firefighters responded about 10:30 p.m. and found high levels of carbon monoxide inside the building.

All activities at the rink are canceled Sunday and Monday. The cause of the leak is unknown.

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