PULASKI COUNTY (WSLS 10) - UPDATE: The Department of Forestry says the fire has burned approximately 25 to 75 acres, and they expect it to burn up to 100 acres.
No structures are threatened.
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Authorities say they expect to be out for awhile tonight controlling the blaze.
The cause of the fire remains under investigation.
ORIGINAL STORY:
The Pulaski County Sheriff's Department has confirmed that crews are headed to what it calls a "fairly large" brush fire in the Allisonia area of the county.
Crews have not yet arrived on-scene.
This is a developing story, stay with WSLS for the latest updates.