The cause of a brush fire in Piru that burned 20 acres is under investigation, authorities said Thursday.
The blaze, which began about 10 p.m. Wednesday, edged within a quarter-mile of a citrus orchard at the Piru Mansion but did not damage or seriously threaten any structures, Ventura County Fire Department officials said. The fire was contained at 1:11 a.m. Thursday, officials said.
About 60 firefighters were called to fight the blaze, fueled by winds of 8 to 10 m.p.h. that helped spread flames across a hillside near Piru Elementary School.
The fire was the second in the area this week.
On Tuesday, county firefighters responded to a call from the school about a fire in a nearby canyon. That fire consumed less than an acre and was quickly extinguished.
Fire officials said they did not know if the two fires were related.