West Bengal, Jan 03 (ANI): India's paramilitary, Border Security Force (BSF) beefed up security at border after they received inputs of increase in infiltration due to growing political instability over upcoming polls in Bangladesh. Paramilitary troopers were seen patrolling along the India-Bangladesh border in Fulbari area of West Bengal. Inspector General of BSF's North Bengal Frontier, SK Sood said that the personnel had recently intercepted Bangladeshi nationals at the border.