Police are investigating a building fire in Sunshine on Saturday morning.
Officers attended a commercial premises on Devonshire Road following reports of smoke coming from the building about 4am.
Fire crews were notified and extinguished the blaze which caused significant damage to two businesses inside.
The cause of the fire has been deemed as suspicious.
Anyone with information can contact Crime Stoppers on 1800 333 000 or at www.crimestoppersvic.com.au.