Quick-thinking bystanders knocked out a couple of spot fires that sparked along State Route 125 in La Mesa Friday morning, officials confirmed.
The small fires ignited just before 8 a.m. at northbound SR-125 near Spring Street.
When fire crews arrived, they found a couple of extinguished spot fires that had been put out by passersby traveling along the freeway.
Firefighters remained on scene as a precaution checking the area for any other possible spot fires.
The incident is under investigation.