A vegetation fire quickly scorched about 80 acres of terrain Wednesday in the Acton area, threatening structures and halting Metrolink service.
The Lidia Fire erupted early Wednesday afternoon in the area of Soledad Canyon Road and Bootleggers Canyon. It initially burned about 50 acres of vegetation but had increased to about 80 acres as of 4:30 p.m. with 30% containment.
Fire crews from Los Angeles County and the U.S. Forest Service both responded to the scene and quickly set up structure-protection units.
Metrolink suspended service on its Antelope Valley line between Vista Canyon and Lancaster due to the fire.
The cause of the fire was unknown, but it broke out amid continuing Santa Ana wind conditions that were fueling major brush fires across the region.
There were no immediate reports of injuries.