The younger brother of Gampola Vidanalage Samantha Kumara, who is well known as drug baron Wele Suda was arrested by Kohuwala police on Sunday (17), local media reported.
Police spokesperson ASP Ruwan Gunasekara told media that the police found 2g and 300mg of heroin in his possession.
The suspect was arrested on a tip-off, ASP Gunasekara added.
Wele Suda was brought to Sri Lanka on January 12 after his arrest in Pakistan. He was charged on earning at least Rs 170 million in a six month period from 2010 January to 2010 June.
He is now kept under three month detention while being questioned.