LAKESIDE, Calif. (FOX 5/KUSI) -- Firefighters on Thursday are working to extinguish a brush fire in the Lakeside area. The fire, located off El Monte Road, is burning around two to three acres with a moderate rate of spread, Cal Fire San Diego said in a post on X at 5:25 p.m. Rancho Santa Fe zip code among most expensive in the U.S. There are no reports of any injuries or structures being threatened at this time. As of 6:11 p.m., fire crews had stopped forward rate of spread at seven acres, fire crews said. Check back for updates on this developing story.