Buildings razed in suspicious fire in Brisbane's south

Fire crews have battled a suspicious factory fire in Brisbane's south this morning.

Emergency services were called to Evans Road to find four buildings alight around 1.30am.

Extinguising the fire caused extensive damage.

No one was injured as the premises were unoccupied at the time.

Evans Road is closed in both directions as police have established a crime scene.

Anyone who witnessed the fire or who has information that could assist police should contact Crime Stoppers on 1800 333 000.