A brush fire broke out Thursday in the Santa Ana River bottom near Riverside Municipal Airport, spreading into thick vegetation but not immediately threatening homes or other structures.
The blaze was reported about 1:10 p.m. just north of the intersection of Jurupa Avenue and Van Buren Boulevard, according to the Riverside Fire Department.
Fire officials said multiple engine and truck crews were sent to the location and encountered flames moving slowly in heavy brush, in the general vicinity of a homeless encampment.
Firefighters were working to establish tentative containment lines as of 1:30 p.m., and the fire was just under an acre, according to reports from the scene.
No injuries were reported, and occupants of the camp were not being evacuated.
The river bottom is dotted with homeless encampments, where warming and cooking fires are common, often leading to wildfires.
The cause of the Thursday’s blaze was not immediately known.
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