Police who seized Asia's largest shipment of liquid cocaine in history at a Bangladeshi port late last month said it was headed for India, the latest sign that drug cartels are increasingly plying their trade in South Asia.

It isn't clear whether India was the final destination for the cocaine, worth as much as $14 million, or whether it was a transit point for other markets in Asia and Europe.

"They wanted to redirect it to India when it got stuck at Chittagong," Bangladeshi police official Mohammad Kamruzzaman said.