About 3pm yesterday (Thursday 22 August 2024), emergency services were called to a residential building on Wason Street, Ulladulla, following reports of a fire.
NSW Fire & Rescue officers attended and extinguished the blaze; however, the building was extensively damaged.
No one was in the building at the time of the incident and police have received no reports of injury.
Officers from South Coast Police District attended and established a crime scene.
Fire fighters were called back to the street just before midnight on Thursday when the blaze reignited.
The incident is being treated as suspicious and investigations into the cause are underway.
Anyone with information is urged to come forward and contact local police or Crime Stoppers on 1800 333 000.