A grass fire this afternoon destroyed three structures in unincorporated Sonoma County south of the city of Sonoma, a Sonoma County fire dispatcher said.
The fire was continuing to burn near state Highway 121 in the community of Schellville, and was first reported at about 1:30 p.m., the dispatcher said.
Three structures have been destroyed by the fire, which had scorched at least 30 acres by 2:30 p.m., the dispatcher said.
One of the structures was believed to be a palette factory, he said. It was not clear if any of the other buildings that burned were residences.
Several units from Sonoma County Fire Department and Cal Fire have been dispatched to the area, according to the fire department.
There were no immediate reports of any injuries.
State Highway 121 has been closed to traffic between state Highway 116 -- also known as Arnold Drive -- and Eighth Street, according to the California Highway Patrol.
Motorists were being advised to avoid the area.
There was no word on a possible cause.