No assessment of the presence of Bangladeshis in Bihar, Uttar Pradesh and other States has been made by the Central Government. The State Governments and Union Territory Administrations have been directed from time to time to detect and deport Bangladeshi nationals staying illegally. Most Bangladeshis reportedly infiltrate into India for economic reasons ... Ground arrangements exist between Border Security Force and Bangladesh Rifles for deportation of those illegal Bangladeshi migrants detected in India.

(Source: LSUQ No.995 dated 6.12.1999 by A.K.S. Chandel & 3 others)