A sheriff says a second person has been killed in a corn mill explosion in southern Wisconsin as crews continue to search the debris for a third person still missing.
Columbia County Sheriff Dennis Richards confirmed the second death at a news conference Thursday evening. Richards also said the cause of the explosion remains unknown.
The names of the victims have not yet been released.
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Richards earlier said that 16 employees were inside the plant in the Village of Cambria when the blast occurred.
Cambria Fire Chief Cody Doucette also confirmed that a smaller fire occurred in a different part of the plant on Monday. Doucette says investigators are trying to determine if there was a connection between the fires.