The incident happeneed in the wee hours when a Border Security Force patrol detected some movement along the fence near border post Hakimpur in North 24 Parganas district of West Bengal.
As the troops challenged the suspects, officials here said, the people fled leaving the bag containing the gold.
"One gold bar and two gold biscuits weighing 1.25-kg was recovered from the bag. The estimated market value of this seized yellow metal is about Rs 38 lakh, " the official said.