GLENDORA, Calif. -

A wildfire has burned about 70 acres of brush in a steep, remote area of the Angeles National Forest but no structures are threatened.
   
The fire was 10 percent contained late Thursday.
   
Forest spokesman John Wagner says the blaze was reported shortly before 1 p.m. above the foothill city of Glendora northeast of Los Angeles.
   
Two firefighters suffered heat-related injuries while battling the flames in hot, dry weather.
   
The cause is under investigation.