With dense fog conditions in north India, terrorists and drug cartels operating from Pakistan appear to be trying to take advantage of the weather conditions.
Security forces have noticed a spike in drone movements from across the border to drop weapons and drugs onto Indian territory. These attempts have increased since the region started experience foggy conditions.
The Border Security Force (BSF) has increased patrolling and set up more 'nakas' or checkpoints to prevent drone intrusions.
A Punjab Police official said the movement of over 200 Pakistani drones had been recorded near the international border this year.
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The officials said smugglers had increased their activities along the international border as the area was blanketed by dense fog.
With the fog reducing visibility to almost zero, BSF troops are relying on the buzzing noise to intercept unmanned aerial vehicles entering from Pakistan. In just one month, they have gunned down eight drones, including hexacopters with six rotors, near the border areas, the BSF official said.
(With PTI inputs)