Last updated at 12:45
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Wildfires rage in northern California

Thousands of people have been forced to leave their homes in northern California after a wildfire burning out of control doubled in size in just 12 hours.
The blaze known as the 'King' is the biggest of 11 fires, in what officials describe as the worst wildfire season on record.
Fire-fighters putting out flames
Smoke is seen rising over Lake Tahoe from the Nevada side of the lake.
Smoke rising over Lake Tahoe
Thousands of people have been forced to leave their homes in northern California after a wildfire burning out of control doubled in size in just 12 hours.
Wildfires surrounding trees
A plane flies over the area of the 'King Fire' dropping fire retardant on to trees.
Plane dropping fire retardant on to trees
A fire-fighter sprays water on to flames.
Fire-fighters putting out flames
This is what's left of the local library in the city of Weed. In just a few hours, more than 100 homes, a church and the library were destroyed by fire.
Burnt out library
Police have arrested a man on suspicion of deliberately starting the forest fire.
Fire-fighters walking through forest