BSF troops recovered more than three kilogrammes of heroin, allegedly airdropped by a Pakistani drone, near the India-Pakistan border in Punjab's Amritsar, an official said on Saturday.

A Border Security Force (BSF) spokesperson said security personnel heard the buzzing sound of a drone, which allegedly entered into Indian territory from across the International Border, in an area near Amritsar's Mullakot village at 3.21 am.