Cal Fire and other crews are on the scene of a 1,000-acre brush fire near Warner Springs in the far northeastern reaches of San Diego county. The fire was reported at 10:40 p.m. Thursday and was 5 to 10 percent contained as of late Friday morning, said Cal Fire Capt. Mike Mohler.
The so-called Eagle Fire off Highway 79 and Camino San Ignacio is burning toward the east, away from populated areas into steep and rugged terrain, Mohler said.
Two additional air tankers have been sent to fight the fire, assisting the four already on the scene.
The fire was threatening two cabins and numerous archaeological sites on the Los Coyotes Indian Reservation, Mohler said.
The cause is under investigation, said David Sossaman, chief of Los Coyotes Police Department, based in Warner Springs.
The reservation covers nearly 25,000 acres of remote mountain terrain about 15 miles northwest of Anza-Borrego Desert State Park. It is the largest Native American reservation in San Diego county, according to the Kumeyaay Information Village website.
Among the responding agencies are Rincon and Pala Indian reservations, Los Coyotes Tribal Police and women firefighters from the Puerta La Cruz and Rainbow correctional facilities in northern San Diego county.
Julie Pendray and City News Service contributed to this report. Patch will update this story as details come in.