A wildfire burning south of Lake Elsinore in the Cleveland National Forest chewed through 850 acres and was 90 percent contained by Sunday morning.
Authorities lifted evacuated orders for about 200 homes in the La Cresta area of Murrieta on Friday evening.
"Residents may continue to see smoke coming from the interior of the burn until materials are fully consumed," fire officials said in a news release. "Remember, use caution and good judgement, hazards may still exist."
Several hundred firefighters are battling the last of the flames and mopping up hot spots.
The terrain in the area is steep and filled with thick brush, which has made it a challenging fire to contain.
The wildfire erupted Thursday afternoon. CHP officials said it started when a dirt bike on an off-road trail hit a bump and crashed into a tree. The throttle stuck and the engine's revving ignited leaking gasoline.
A spokesperson for the Cleveland National Forest, however, could not confirm the cause of the fire.