The Madre Fire, which has charred 268 acres of national forest land north of Azusa, is expected to be fully contained Friday morning, fire commanders said.
The blaze was 90 percent contained as of Thursday evening, and resources committed to the fire were scaled back to 173 firefighters. More than 500 firefighters backed by seven helicopters battled the blaze on Wednesday, officials said.
Most of the active flames were gone by Wednesday night, said Nathan Judy of the U.S. Forest Service.
Crews were expected to fully encircle the blaze by 8 a.m. Friday, according to the U.S. Forest Service.
The fire was reported at 5:56 p.m. Monday along San Gabriel Canyon (39) Road and burned into the Angeles National Forest, according to authorities, who responded with an aggressive series of aerial water drops. What sparked the fire has not been reported.
Three firefighters have suffered minor injuries battling the fire, Judy said.