The Canyon fire broke out around 2 p.m. near Holser Canyon Road, northeast of Piru. By Thursday night, it was pushing east toward Castaic and Interstate 5.

Fire crews from Ventura and Los Angeles counties are battling a rapidly growing vegetation fire in Holser Canyon, near Lake Piru, in 100-degree heat. The blaze, called the Canyon Fire, is estimated to be at 1,

Canyon Fire initially started today at 1:25 p.m. in Los Angeles, Ventura County, California. After being active for eight hours, it has burned 4,856.3 acres. 250 firefighters have been assigned to respond to the blaze, however, by Thursday evening, the fire remains uncontained and keeps burning. However, investigations into the cause are ongoing.