A massive California wildfire that has already killed two people and destroyed 100 structures was burning out of control Friday evening as officials said it was possible more victims could be found in the rubble.

The so-called Erskine Fire, which broke out on Thursday afternoon in the foothills of Kern County about 42 miles (68 km) northeast of Bakersfield, had mushroomed on Friday to char more than 30,000 acres (12,140 hectares), making it one of the worst in an already intense California fire season.

The blaze has also sent three firefighters to the hospital for smoke inhalation and forced hundreds of residents to flee their homes ahead of the flames. California Gov. Jerry Brown declared a state of emergency for Kern County.