California wildfire will burn for the rest of August, say officials

California's biggest wildfire on record is expected to burn for the rest of the month, fire officials said on Tuesday.

The Mendocino Complex Fire has already engulfed 290,692 acres (117,639 hectares) - almost the size of Los Angeles.

Barely a third of it is under control, according to the California Department of Forestry and Fire Protection.

Firefighters are tackling 18 major blazes across the state amid strong winds and low humidity.

The fire - which comprises two blazes in the state's north - was declared the biggest in California's history on Monday.

Officials had set a target to extinguish the fire by mid-August, but they now say they will need until early September.