She was arrested in the Armagh area today on suspicion of a number of offences including conspiracy to supply class A and B controlled drugs.
She has also been arrested on suspicion of money laundering offences involving the purchase of high value Rolex watches.
The woman is currently in custody assisting officers with their enquiries.
To date, 18 people so far have been charged to court in connection with this investigation.
One person has been sentenced and seven others have pleaded guilty and await sentencing.