A Probe news magazine report profiles Bangladeshi criminals' activities in Kolkata. It says:
Bangladesh's top criminals have found a safe haven in Nadia, Bongaon, Dumdum, Teghatia, Thakurpukur and Kolkata of the Indian state of West Bengal. When (Bangladeshi) law enforcers turn tough or the criminals commit any serious crime here, they simply cross the border, legally or illegally. They take refuge in familiar haunts there, sheltered by official and unofficial 'protectors'.It also lists the 23 most wanted outlaws declared by the Bangladesh Police. This online weekly magazine is an interesting read.