Police are investigating two connected arsons at Boronia Heights overnight.
Initial investigations indicate just after midnight, two people attended a business on Fedrick Street in Boronia Heights.
The have used a hammer and metal bar to smash the front glass door and appeared to tip fuel through the hole and set it alight.
They left in a stolen Porsche which was located burnt out a short time later on Kadlunga Court.
The business suffered minor damage however the car was destroyed by the fire.
The Porsche was stolen on April 2 from a Jimboomba residence.
Detectives are appealing for anyone with relevant CCTV or dashcam vision to contact police.