Two children and their great-grandmother are among five people to have died in a raging wildfire in northern California, reports say, APA reports quoting BBC.
Two firefighters died on Thursday, 17 people are missing and tens of thousands have fled their homes.
The fires in Shasta county are being sucked up by strong winds to form "fire tornados" that are uprooting trees and overturning cars, fire officials say.
Firefighters are battling the blaze, which is only 5% contained so far.
The blazes, known as the Carr fire, have destroyed at least 500 structures and are threatening thousands of homes.
The wildfire began on Monday after a car malfunctioned. It has scorched over 48,000 acres (194 sq km) of land - an area larger than the city of San Francisco.