The Special Task Force arrested two drivers and a helper of a truck, heading to Calcutta from Manipur, on NH12 in Murshidabad’s Raghunathganj on Thursday morning after four kilos of heroin worth around Rs 20 crore was recovered from the vehicle.

“Four packets, weighing one kilo each, has been seized. The estimated value of the consignment in the international market could be around Rs 20 crore. The arrested trio hail from Mizoram,” said Jangipur police chief, Y. Raghuvamshi.