Police are appealing for public assistance following two burglaries at the same business in Maribyr-nong.
Investigators believe an offender entered a medical clinic on Edgewater Boulevard around 8.35pm on September 10 and again on October 15 around 7.30pm.
On both occasions he has entered a room and stolen prescription medications, placing them in a green reusable shopping bag before fleeing the scene.
He is described as 185cm tall, medium build, brown wavy hair, black pants and top and grey shoes.
He was wearing a black North Face puffer jacket, blue jeans with holes and grey runners.
Investigators have released images and CCTV of a man they believe may be able to assist with their investigation.