A blaze which broke out at 4am in Centre Court Arcade Pakenham is being treated as suspicious.
The fire started in the rear of the arcade and was extinguished a short time later.
Police and emergency services are currently at the scene.
The exact cause is yet to be determined however police are treating the blaze as suspicious.
A crime scene has been established and the investigation is ongoing.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at crimestoppersvic.com.au.
