Forming part of Operation United, officers were patrolling Mount Derrimut Road when they observed a black BMW allegedly travelling at high speeds about 9:30pm.
Officers intercepted the car and spoke with the male driver before locating a bag of ecstasy on the ground.
A subsequent search of the vehicle discovered what is believed to be GHB, methylamphetamine and a large amount of cash.
Officers arrested the man before Brimbank Divisional Response Unit detectives executed a search warrant at an address in Derrimut this morning.
A 38-year-old man has since been charged with traffick methylamphetamine, two counts of possessing methylamphetamine, two counts of possessing ecstasy, possess 1,4-Butanediol and deal with proceeds of crime.
The Derrimut man will face Sunshine Magistrates’ Court today.
The arrest forms part of Operation United, an operation targeting a range of high harm offences including robberies, aggravated burglaries, armed robberies, carjackings and assaults.
The operation kicked off in Melbourne’s north-west suburbs this week and brings together police from a range of units across the North West Metro Region (Division 3) and Crime Command as part of a joint effort to deter and disrupt an anticipated increase in a number of criminal offences as COVID-19 restrictions ease.