Police stated that the suspect was arrested with a stock of Kerala cannabis while inspecting a lorry on a tip-off received by the Wanni Army intelligence.
The suspect has been identified as a resident of Jaffna.
Army intelligence officers have taken him into custody and handed him over to the Erattaperiyakulam Police while he was transporting the cannabis, which was bought by boat from India, to be distributed to the suburbs including Colombo.
The suspect and the seized cannabis are to be produced before the Vavuniya Magistrate's Court.
Wanni Army intelligence officers and Erattaperiyakulam Police are conducting further investigations.