Nineteen people have now been arrested after police raided four more homes in Goulburn on Thursday as part of an sting on a crystal methamphetamine supply ring.
Three men and a woman were arrested this morning after raids on four properties on Francis, Elm and Avoca Streets.
Police seized four trail bikes, two firearms, a small amount of cannabis, sporting memorabilia as well as clothing which related to a separate fraud investigation at the properties.
On Tuesday, 15 people were arrested and methylamphetamine, cannabis, cash and property were seized in raids in the town and on a property in Sydney.
Police will allege the four people arrested on Thursday, along with the 15 arrested in Tuesday morning's raids, were part of a drug supply network operating in the region.
The operation was carried out by the Hume Local Area Command and is dubbed Strike Force Coull.
Detective Inspector Chad Gillies, from the Hume command said he "anticipates further arrests" in relation to the investigation.
Over 150 charges have so far been laid on the 15 people.
Of these, three people entered pleas of guilty on Wednesday on their appearance at Goulburn Local Court, according to Mr Gillies.
He said six remained in custody, while the others were granted conditional bail.
They have been given various court dates in November and December.
