UPDATE 10 p.m. - A total of one structure and three outbuildings were destroyed. Firefighters will remain on scene throughout the night performing mop up.
Update 5:15 P.M. - Forward spread stopped. Resources committed about four hours. Cause of the fire is under investigation.
Update 4:55 P.M. Fire holding at 20-25 acres (unmapped) Crews are making good progress. Fixed-wing aircraft released.
CAL FIRE/Riverside County Firefighters are on scene of a fully involved structure fire with approximately 20 acres of vegetation in the Sage area off of Cactus Valley Rd. Updates will be posted as information becomes available.