Just before 7.15pm, police and MFS were called to Stockton St after reports of a fire.

The blaze was quickly extinguished before it spread to adjoining units.

No one was home at the time of the fire.

Fire Cause Investigators attended the scene and deemed the fire suspicious.

Anyone with information about the fire is asked to contact Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au