Patched Hells Angels gang members are among 13 people arrested as part of a police investigation into organised crime.
The gang members have been charged with supplying methamphetamine and possessing the drug for supply, while the others have been charged with a range of meth- and/or cocaine-related charges.
Earlier on Wednesday police arrested seven men and seized 760 grams of cocaine and $81,000 in cash.
"It's unusual to achieve such a big domestic seizure," says Detective Senior Sergeant Lloyd Schmid.
Police say 750 grams of the drug was found in a single seizure.
"Cocaine is usually picked up in much smaller amounts, so today's find is indicative of people who have been heavily involved in persistent, premeditated, career drug dealing."
He says the seizure has a street value of more than $300,000. Around 84 grams of cocaine that had been prepared for supply was also discovered.
"These offenders were creating some fairly identifiable cocaine. The drug was being mixed with another substance and moulded into ounce-sized bricks with a handmade wooden press."
Det Snr Sgt Schmid says the offenders were operating mini drug supply networks that were linked in various ways.
"People who choose to involve themselves in the supply of illicit drugs can expect to be held to account."
The maximum penalty for the supply of methamphetamine and cocaine is life imprisonment.
Newshub.