Acting Sergeant Tim Chester of Portland police said 10 officers raided a residence at Waratah Crescent, Portland, on Tuesday morning where they seized illegal and prescription drugs, and a large amount of cash.

Sergeant Chester said police arrested a 26-year-old Portland man at the residence. He said the man was on bail in relation to previous drug possession and trafficking offences.

"On that occasion there was a mixture of the same type of drugs. Today we just found further quantities," Sergeant Chester said.

"Information from the public and further inquiries in relation to the other matters led us to the execution of a search warrant."

He said police found cannabis, methamphetamine, cocaine, as well as prescription medication at the property.

"We will allege it was packaged ready for sale as well as a large amount of cash that was also seized that were the proceeds of crime," Sergeant Chester said.

The man was charged with further trafficking and drug possession offences, as well as committing an indictable offence on bail.

He is due to face the Warrnambool Magistrates' Court on Wednesday.

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