FOND DU LAC COUNTY, WI (WTAQ) - Fire investigators say a marsh fire in Fond du Lac County was caused by an ATV engine.
The blaze burned about 80 acres Saturday afternoon, near the town of Calumet.
Authorities say hunters driving the ATV packed dry cattails around the exhaust and engine, acting as flint for the fire.
The blaze spread quickly because of the dry, windy condition.
Officials say no buildings were destroyed or damaged in the fire, no one was injured.