MINNEAPOLIS (WCCO) — The Chippewa County Sheriff’s Office says two men died after they tried retrieving a piece of equipment that fell into a manure pit.

On Thursday at 5:17 p.m., the sheriff’s office received a report of two men falling into a manure pit (or tank) at a family farm in Woodmohr, Wisconsin, which is south of Bloomer, Wisconsin.

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When deputies arrived on scene, they learned the two men were trying to retrieve the equipment, but were overcome by the manure gas and became unresponsive.

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Emergency responders were able to pull the men from the manure pit, but efforts to revive the victims were unsuccessful.

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The victims’ identities have not been released.