Firefighters Saturday battled a 100-feet-by-300-feet brush fire in Jurupa Valley near the Santa Ana River.
The fire was reported around 2:30 p.m. Saturday in the area of Marlatt Street and Limonite Avenue, according to the nonprofit wildfire-information service Watch Duty.
No structures were threatened, and the fire was stopped just before 3 p.m.
The cause of the fire was not immediately known.
No injuries were immediately reported.