New Delhi: There are 2-6 crore Bangladeshi migrants living in India - the largest illegal migration from one country to another, a former senior officer of India's border guards said on Tuesday.

An Indian Border Security Force (BSF) soldier (L) and a pair of Bangladesh Rifles (BDR) troopers (C/R) conduct a joint pillar inspection on the zero line which constitutes the border between the two countries at Kamalasargar, some 40 km southwest of Agartala, 25 February 2007. Pic: AFP