Authorities say someone intentionally set a 30 acre forest fire in Blount County.
County dispatchers say the fire was first discovered just after 2:00 a.m. by officers in the area.
It's in the area near Hollybrook Road in Rockford.
Firefighters say the rain overnight helped them put out the flames.
Later Monday morning, fire crews will head back up the mountain to cut fire lines just as a precaution to keep it from starting back up and spreading across the mountain.