Detectives from the Armed Crime Squad have charged three men as part of their investigation after a man self-presented to an Epping hospital with a gunshot wound earlier this week.
Police have been told a 37-year-old man arrived about 12.30am on Monday, 13 October with a non-life-threatening gunshot wound to his upper body.
The circumstances surrounding how the man obtained his injuries remain unclear.
With assistance from the Illicit Firearms Squad, a search warrant was executed at a residential address in Pascoe Vale later that day.
A 3D printed handgun, a machete, a conducted electricity device (Taser) and what appear to ketamine, cannabis and methylamphetamine were seized from the address.
A 31-year-old Pascoe Vale man was charged with prohibited person possess firearm, traffick/possess drug of dependence (methylamphetamine, ketamine and cannabis), two counts of possess prohibited weapon (machete and conducted electricity device), knowingly deal with proceeds of crime and fail to comply with direction.
He was remanded to appear at Broadmeadows Magistrates' Court on 29 October.
With the assistance of the Special Operations Group, a search warrant was executed at a residential address in Lalor around 10am this morning (Thursday, 16 October).
Two 3D printed handguns, one with a silencer, ammunition and what appear to be methylamphetamine and GHB were seized from the address.
Two men from Lalor - a 40-year-old and an 18-year-old - were both taken into custody.
The 40-year-old was charged with possess drug of dependence (methylamphetamine).
The 18-year-old was charged with two counts of prohibited person possess firearm, prohibited person possess silencer and two counts of possess drug of dependence (methylamphetamine and GHB).
The duo was bailed to appear at Heidelberg Magistrates' Court on 4 December.
Police believe the incident was targeted.
The investigation remains ongoing.
Anyone with any information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au