A spokesperson of the Punjab Frontier BSF headquarters said on Thursday that the BSF jawans posted on the border got a clue regarding this.

After the firing, the drone managed to return, but the heroin consignment was seized.

BSF jawans conducted a search operation in the area. Meanwhile, BSF found four packets from the fields near the International Border.

When the packets were opened after a security check, 4.6kg of heroin was recovered.

The value of the drugs seized is said to be Rs 23 crore in the international market.