Police have collaborated with counterparts on the Mainland and in Malaysia to stop a transnational drug-trafficking syndicate active in Asia.

Mainland police arrested six people and seized 102kg of 'ice' in Shenzhen and Guangzhou last month, while Malaysian police arrested 15 people, including the syndicate head this week.

Malaysian police also seized 220kg of ice, 132kg of ecstasy, and 18kg of ketamine worth $110 million.