Police have seized more than 740kg of dried tobacco from a property in the Central West of NSW.
The five-acre illegal plantation was discovered in Mendooran, north of Dubbo, last week.
Officers also found four drying kilns at the property and have estimated the haul to be worth more than $5 million.
It has since been destroyed and a 34-year-old is assisting police with inquiries.
Officers have urged anyone with information to contact Crime Stoppers on 1800 333 000.
The illegal tobacco trade costs Australia millions in lost revenue each year. According to the Australian Tax Office, in the 2017-18 financial year, illicit tobacco cost Australia $647 million in lost excise revenue.
Between 2016-19, the ATO and partner organisations seized more than 256,000kg of illicit tobacco, worth more than $222 million. Between 2018-19 alone more than 41,000kg was destroyed, worth $42 million. Several significant hauls have also recently been seized.