The fire broke out around 4:30 p.m. in the 1100 block of North Anaheim Boulevard, near the 91 Freeway. Smoke was visible for miles.
The firefighter was taken to a hospital, but has since been released. Details about the firefighter's injuries were not immediately known. A police officer was also treated at the scene.
Fire crews were able to gain the upper hand on the blaze, but smoke lingered in the area throughout the evening.
The cause of the fire remains under investigation.
