NEW : More than 1,600 homes have been destroyed in the past week by Southern California wildfires . White truck seen on Santiago Canyon Road near time fire started . Charges filed against man who allegedly set small fire and walked off . Steven Frankland five of one arrested in arson investigations Thursday . Arson investigations continue across multiple California counties .
NEW : White truck seen on Santiago Canyon Road near time fire started . Charges filed against man who allegedly set small fire and walked off . Steven Frankland five of one arrested in arson investigations Thursday . Arson investigations continue across multiple California counties .