The Navy Commander said that the Navy intelligence unit is having a close watch for attempts to smuggle heroin using the sea route.He said that poor weather poses a challenge to the Navy  but the latest technology is often used to detect and bust operations by heroin smugglers. (Colombo Gazette) The Navy has beefed up the security at sea to nab heroin smugglers, Navy Commander Ravindra Wijegunaratne told reporters today.He said that the Navy has already managed to foil several attempts to smuggle heroin into Sri Lanka from India.