Only a day after it began, the blaze near the town of Paradise had grown to almost 110 square miles, and investigators found the dead in vehicles that were torched by the flames.
In all, three major fires are burning across the state. The size of the fire is about 110 square miles, he said Friday.
More than 250,000 people have been evacuated across the areas.
"The magnitude of destruction we have seen is really unbelievable and heartbreaking and our hearts go to everybody who has been affected by this", said Mark Ghilarducci, the director of the California Governor's Office of Emergency Services.
Meteorologists marvelled at the "gut-wrenching" rate of spread Thursday's fires exhibited.
The blaze started on Thursday near Thousand Oaks, about 40 miles (64km) north-west of central Los Angeles. The nearby Hill Fire ignited around the same time and has since grown to 6,100 acres.
Winds of up to 50 miles an hour (80kmh) have stoked the Woolsey Fire, which has charred some 35,000 acres (14,200 hectares) around Los Angeles. "I just had to evacuate my home from the fires".
Lady Gaga shared videos on Instagram of everyone being evacuated against a backdrop of huge plumes of smoke. "God is good. I'm just praying everyone is safe" she wrote. West tweeted on Friday that "our family is safe and close".
Singer Cher, who has had a house in Malibu since 1972, also wrote: "I'm anxious about my house, but there is nothing I can do".
"Evacuated last night. Bleak House and the collection may be endangered but the gift of life remains", del Toro, director of Oscar best picture victor "The Shape of Water", tweeted on Friday.
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It was the event we have feared for a long time", Butte County Sheriff Kory Honea said at a Friday evening news conference. That helped double the size of the Woolsey Fire to 8 000 acres (3238 hectares), fire officials said .
The blaze has also reportedly destroyed the Paramount Ranch in western California, where HBO series Westworld is filmed.
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Traffic jams the southbound lanes of Pacific Coast Highway as all of the city of Malibu is evacuated to flee advancing flames during the Woolsey Fire on November 9, 2018 in Malibu, California.
More than 2,200 firefighters were battling the blaze, backed up by helicopters and water tankers. "It was the event we have feared for a long time", Butte County Sheriff Kory Honea said at a Friday evening news conference. Three more were found outside a residence, and one inside a house.
After shuffling schedules for the firefighters who would remain, UFA made a decision to send 11 people and three fire crews.
Some of the evacuation orders were for residents within the City of Los Angeles in the West Hills area. The air is acrid. Officials in Malibu warned residents at 12:30 p.m.to leave immediately as flames began burning out of control toward neighborhoods.
"Our scientists and toxicologists have reviewed information about the fire's location and do not believe the fire has caused any releases of hazardous materials that would pose a risk to people exposed to the smoke", the statement read.
The three blazes are among 16 now active fires in California.
Over 24 hours, the fire has burned at the rate of about 0.8 acres per second or 48.6 acres per minute.