The Ridge Fire, which broke out late Saturday night in the Hollister Ridge area, was 30% contained as of Monday morning.
Santa Barbara County Fire officials also reported that the fire has burned nearly 17 acres.
The fire was first reported at about 10:20 p.m. near Hollister Ranch Rd. and Agua Rd.
The cause is suspected to be arson, and a man who authorities believe started the fire has been arrested.
An evacuation warning that was issued for the area of Alegria Canyon/Hollister Ranch on Sunday has been canceled.
