Firefighters watch over the Sand Fire as it moves towards Fair Oaks Canyon in Santa Clarita
A firefighting helicopter drops water at Fair Oaks Canyon during the Sand Fire in Santa Clarita
The wildfire has burned across at least 22,000 acres so far and is only 10 per cent contained
Firefighters battle flames in Placerita Canyon at the Sand Fire in Santa Clarita, California
A firefighter steps away from flames in Placerita Canyon at the Sand Fire in Santa Clarita
Firefighters are forced to retreat as flames close in on them at the Sand Fire in Santa Clarita
Local residents watch a blaze as the Sand Fire moves towards Fair Oaks Canyon housing estate
A firefighting aircraft drops fire retardant on the Sand Fire in the Angeles National Forest