Police from Caulfield Divisional Response Unit have arrested a man and seized drugs as part of Operation Damper.
Investigators executed a search warrant at an address on Dover Place in Parkdale just before 9am this morning.
Large quantities of substances believed to be methylamphetamine, cannabis, heroine, ecstasy, GHB, and prescription medications were located within the premises.
An amount of cash was also seized.
A 41-year-old Parkdale man was arrested at the scene, he remains in custody and is assisting police with their enquiries.
The investigation and search warrant remains ongoing and the man is expected to be charged with various drug related offences later today.