A fire burning out of control in Southern California has grown to a massive 8,000 hectares, officials said, as residents in an area north of Los Angeles were forced to evacuate.

The blaze, which has been dubbed the Sand Fire after a nearby neighbourhood, is only 10 per cent contained, according to the National Wildfire Coordinating Group (NWCG).

Local media reported that a burned body had been recovered in the city of Santa Clarita, located some 55 kilometres from downtown Los Angeles, although it was unclear if the person had died in the blaze.

The fire has been burning in California's Santa Clarita Valley since Friday, but has now shifted to threaten more populated areas such as the Sand Canyon neighbourhood of Santa Clarita, county fire officials said, according to the Los Angeles Times.

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At least 1,500 homes are threatened, the Times reported.

Orange flames could be seen lapping at the night sky early on Sunday local time, as a number of roads remained closed and health officials warned of poor air quality and hazardous smoke.

More than 900 firefighters are battling the blaze and residents have been evacuated, NWCG reported.

It added that structures had been destroyed or damaged although it was unable to confirm specific properties.

Local media reported that ash and smoke could be seen as far away as Pasadena and Malibu.

California is experiencing a record five-year drought and bushland is at risk of igniting from the smallest spark.

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AFP