Singapore authorities have made their biggest ever seizure of rhino horn with a $830 000 (almost R15 million) haul confiscated from a smuggler arriving from South Africa, officials said Wednesday. The city-state's National Parks Board said 20 pieces of horn weighing a total of 34 kilograms were discovered Tuesday in two bags at Singapore Changi Airport. The contraband was detected by sniffer dogs and belonged to a passenger travelling onward to Laos, the board said, adding that the suspect had been arrested. "This is the largest seizure of rhinoceros horns in Singapore to date," it said in a statement.