Plain clothes and uniformed police targeted Uckfield with drug patrols on Friday night and in the early hours of Saturday morning.
Anyone approached by the dog, which was accompanied by a specialist handler, was searched. Officers targeted the High Street and people using licensed premises in that area of the town.
Several searches were conducted during the operation, including that of a 34-year-old local man, who was stopped near the bridge over the River Uck at 12.20am after the police drug detection dog made a positive indication.
A small quantity of drugs was seized and the man was arrested. He was subsequently charged with attempting to possess a class B drug and received a caution.
Sergeant Kara Tombling, of the Uckfield neighbourhood policing team, said: “Uckfield is one of Wealden’s largest towns and we are determined to make it an even safer place for local residents and those who come here to meet friends and socialise. We will continue to take action against anyone found carrying drugs in the town, and right across Wealden district.”
Inspector Tony Wakefield, who heads up neighbourhood policing in Wealden district, added: “This is the first of a number of operations that we will be running across the whole of Wealden involving the use of a drug detection dog. The message is clear – if you don’t want to get caught, don’t carry drugs.”