Tasmania police have confirmed that today's Operation Vouch had resulted in the following arrests.
*One for trafficking in cannabis – with that person charged and detained for court in Hobart this
* One or trafficking in cannabis and bailed;
* One for trafficking in methamphetamine – charged and detained for court in Devonport this evening.
* Three people have been arrested in relation to outstanding warrants.
A further three people are in custody in relation to drug trafficking and are continuing to assist police with their enquiries.
A quantity of methamphetamine, cannabis and three small calibre unregistered firearms seized as part of the operation.
Police say Operation Vouch is an ongoing operation.
EARLIER: About 180 Tasmanian and Federal Police were involved in a coordinated swoop on twelve properties early this morning as part of a long-running drug operation.
Eight properties around Hobart and four in Devonport were searched, including a Moonah business.
Detective Inspector Glenn Lathey said a number of people had been arrested and property seized from the raids.
Three people were being held in custody while four had been arrested arising from property searches.
Special Operations were called in to assist with a New Town property in Hobart's northern suburbs, which had impromised additional security measures including barbed wire, additional fencing and blacked out windows.
Police reportedly used chainsaws to access the property.
Special Operations, which are utilised where there are a risk to general duties or fortifications, were also used at two other locations.
Nearby resident Mark Cutler said he was woken up by the operation, 50 metres down the street, at around 6am.
Despite the large amount of resources utilised, at 9:30am this morning Mr Lathey could report only an amount of cannibis, steroids and prescription drugs had been found, along with two unregistered firearms.
Mr Lathey said police were still conducting searches, and charges would be confirmed later today.
While no violence was reported in response to the operation, a number of people outside the New Town house hurled abuse at police and onlookers.
"You ain't gonna get nothing on us," one woman said, calling those gathered paedophiles and obscenities.
Mr Lathey said no members of bikie gangs were arrested.