SAN DIEGO (CBS 8) - Fast action by firefighters stops a brush fire from burning nearby buildings.

The flames ignited quickly and spread along the 4300 block of Home Avenue east of Interstate 805 around 1:20 a.m. behind the Pearl Wash self-serve car wash.

To reach the flames, firefighters had to break through a wood fence. Crews managed to keep it away from any structures.

The cause of the fire is unknown, however fire crews point out that a homeless encampment is located near where the fire started.