Around £20,000 in cash has been seized following two police searches in Londonderry on Wednesday.
Police confirmed following the seizure a 39-year old man was arrested on suspicion of being concerned in the supply of Class A, B and C controlled drugs, attempted Possession of a Class B controlled drug, and possession of criminal property.
They confirmed he remains in custody at this time.
As part of enquiries, police officers also seized a vehicle.
A police spokesperson said: “I want to take this opportunity to encourage anyone with concerns or information about the supply or use of illegal drugs to contact police on 101. A report can also be made online using our non-emergency reporting form.”