The heroin, concealed inside 17,500 small grease cans packed into a large container sent from the Pakistani city of Karachi, was found yesterday at a customs terminal in Sri Lanka's capital, Colombo, said Mali Piyasena, a customs director.
A Pakistani national and three Sri Lankans were arrested in connection to the seizure and will be handed over to the police narcotics division after the completion of a customs investigation, Piyasena said.
A police official involved in the investigation said Pakistanis are known to operate a narcotics ring that supplies heroin for Sri Lankan drug dealers and for shipment to European countries.
The official, who spoke on condition of anonymity because he was not authorized to speak to the media, said authorities received information that part of this stock was for Sri Lanka, and the rest was to be shipped to Europe.