The north Bengal unit of the special task force arrested three persons with 1kg of brown sugar, a derivative of heroin, worth around Rs 1 crore from the Pankouri area of Jalpaiguri district on Friday night.

Tausif Ansari, who hails from Meerut in Uttar Pradesh, Alimuddin Rehman and Saddam Ali, both from Kamrup district in Assam, were heading to Bihar in a bus when they were held. “Three ATM cards, about Rs 35,000 and some documents have also been seized from them,” said a source.

Also, six persons were held with a gun, bullets and sharp weapons from Naukaghat area in Siliguri, on Friday night.