Firefighters late Tuesday battled a brush fire above Spirit Rock near Woodacre in Marin County, and sheriff's deputies later arrested a Petaluma man suspected of lighting the blaze.
Henry Walker, 73, was arrested on felony suspicion of reckless burning after he admitted setting the fire, the Marin County Sheriff's Office said.
Walker told a Marin County deputy he set some personal effects on fire while on the ridge, but the fire grew out of control and he was unable to put the fire out, sheriff's officials said.
Walker suffered minor injuries when he tried to stomp out the flames.
Fire officials said out of an abundance of caution, an evacuation warning was issued for the area of Rancho Santa Margarita East.
The blaze burned at least 10 acres and is 60% contained. Forward progress of the fire has also been stopped, firefighters said.
No other informaiton was immediately available.