According to the Associated Press, at least six structures were lost in the Sheep Herder Hill Fire that was first reported Sunday afternoon.
The fire is moving east and away from the town of Casper, but it has already burned about 6,000 acres.
More than 150 homes and cabins on Casper Mountain remained evacuated Monday. At least nine families are staying at an evacuation shelter.
The cause of the fire has not been determined.
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