California wildfire burns 500-plus structures

Firefighters say 500 structures have been destroyed in a raging Northern California wildfire and another 5,000 are threatened.

Cal Fire released the updated figure on Friday, though the number of homes burned in the so-called Carr Fire is expected to increase.

Earlier on Friday, fire officials said 65 structures had been destroyed by the fast-moving blaze in Shasta County.

The blaze grew to 194 square kilometres by last night. It began Monday with a mechanical failure of a vehicle. It grew completely out of control on Thursday, tearing through two small communities and reaching the city of Redding.

Tens of thousands of people fled the city in fear of their lives from the blaze, which has killed two firefighters.