Last month, more than 2 tons of elephant tusks worth an estimated $2.25 million found in a container from Togo were confiscated by Hong Kong customs officials, who said it was the city's biggest ivory seizure since 2010.
Demand for rhino horn is driven by the belief in Asia that ground-up horn cures diseases, which is not supported by medical evidence. Rhino horn is made of keratin, a tough protein found in human fingernails.