On Thursday, detectives charged an eighth person in linked to more than 2440 cannabis plants and 427kg of dried cannabis, with an estimated potential street value of more than $9.6 million, on a property at Ballimore, 40 kilometres east of Dubbo.

In December 2019, detectives from the State Crime Command's Drug and Firearms Squad established Strike Force Emerstan to investigate the cultivation and supply of cannabis across the state's Central West.

As part of the sting, five men - aged 26, 40, 42, 45 and 52 - and two women - aged 34 and 59 - have been arrested and charged.

All seven remain before the courts.

Following further investigations, an eighth arrest was made, with officers taking a 36-year-old man into custody at Cabramatta Police Station on Thursday.

The Cabramatta man was charged with cultivating a prohibited plant (large commercial quantity), suppling a prohibited drug (large commercial quantity), participating in a criminal group and knowingly dealing with proceeds of crime.

Police will allege in court the man was involved in the large-scale cultivation and supply of cannabis across NSW.

He was refused bail to appear at Liverpool Local Court on Friday. Investigations by the Drug and Firearms Squad are continuing.