Firefighters responded to a blaze near Lakeside on Tuesday afternoon.
Fire crews were still on the scene of a brush fire in Lakeside Monday night.
The fire started around 1:20 p.m. at 15805 El Monte Road near El Monte County Park. White smoke could be pouring from the side of El Capitan Mountain.
At last check, the fire has burned 112 acres and is 75 percent surrounded, according to officials with the U.S. Forestry Service. Full containment is expected Wednesday.
Cal Fire and three hotshot teams were on the scene all afternoon. An air tanker was seen flying overhead, and helicopters dropped water on the flames.
There is a neighborhood at the base of the mountain. Residents told NBC 7 they were worried about brush fires because conditions have been so dry.
Check back for updates on this developing story.