UPDATE (11:08 a.m.) - SLO City Fire says the fire was due to a warming fire that spread to nearby vegetation.
It was kept to about 50x50-feet in size.
No one was injured but fire officials say two vehicles were damaged.
ORIGINAL STORY: San Luis Obispo City Fire is on scene of a 20 square foot vegetation fire on Santa Rosa Street and Foothill Boulevard.
According to SLO City Fire, vehicles are threatened. Firefighters are on scene attacking the fire.
This is a developing story, we will provide updates as more information becomes available.