Customs officers in Hong Kong seized 40 kg (88 pounds) of illegal rhino horns worth HK$8 million ($1 million), Reuters reported Friday.

It’s the latest seizure in Hong Kong’s push to stop the rising trafficking of endangered species through its territory, Reuters said.

Hong Kong is a major hub for illegal wildlife trafficking due to its proximity to major markets for endangered species products and fairly relaxed enforcement – but that enforcement has been picking up. Last month, Hong Kong Customs confiscated over 1,000 ivory tusks and a record volume of pangolin scales when it busted a major smuggling ring from Africa.

The rhino horn traffickers were en route to Vietnam from Johannesburg, South Africa.

Beijing sparked controversy in October when it announced that it would legalize the use of tiger and rhinoceros parts for scientific and medical purposes. It shelved the plan in response to public outcry over its potential harm to endangered wildlife.

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