Most wanted in Bangladesh and missing since being released on bail from the Dum Dum Central Jail on August 8, Sailen Biswas has the requisite proof and papers to stand testimony to being a bonafide Indian citizen.
A resident of Birati, less than 15 km from the heart of Kolkata, Biswas, founder leader of the outlawed New Biplabi Communist Party in Bangladesh, has acquired a secure living in the city over the past few years - courtesy proceeds raised from his venture of taking bheris on lease.
Wanted in 75 cases, including murder, extortion and possession of arms in Bangladesh, and been awarded a death sentence by a Khulna court in February 2005, which was later commuted to life imprisonment, Biswas holds a valid a voter identity card and PAN card, in addition to other vital documents to prove his Indian citizenship.
Biswas along with his kin had been based in the northern fringes of the city since 2003, and had been living off the proceeds of his business in the name of Pradip Biswas.
Sources aware of Biswas' antecedents in the state security establishment, said that it is because of the likes of Biswas, who cross over into India and become internalised citizens with valid papers, that flashpoints arising out of ethnic strife as is being currently witnessed in Assam, crop up.
Illegal migrants, even those without any criminal antecedents, routinely cross over into India and secure all the papers necessary to prove bonafide citizenship, said sources.
"He had been living as a successful businessman here. My father has every document, from a Voter ID to a PAN card, to testify to being a bonafide Indian citizen. He had even been listed as a voter from the Belgachia (East) constituency. He had been abducted from near the entry gate to the Dum Dum Central Jail and we have no clue of his whereabouts," Mrinmoy Biswas, son of the wanted immigrant, told HT.
The family further said that having successfully established his status as an Indian national (voter card number BKN 4625828), Sailen, son of Premchand Biswas, managed to set up a successful venture in the fringes of the city.
Although he started out as a decorator during his stay in Dum Dum, Biswas took a large tract of water body on lease in 2009 and set up a fisheries unit at Kurulia of Bongaon in the North 24-Parganas.
Biswas fled Bangladesh back in 2003 after the Khaleda Zia government launched a crackdown on armed renegade outfits as part of a mission codenamed 'Operation Clean Heart'.
According to sources in the Bangladesh government, Biswas, originally from the Shalua village of Khulna, is wanted in connection with 54 criminal cases in Khulna, Satkhira and Jessore districts of Bangladesh.
He is further listed as an accused in another 21 cases of murder, extortion and kidnappings in the Dumuria police station area of Bangladesh.
However, though crossing over and living low profile, his violent past continued to haunt him, with several of his former party colleagues sheltered similarly in Bengal, turning foes and trying to hunt him down.
He was arrested twice in connection with a homicide and an arms case since crossing over into Bengal. However, in both cases, which went to trial at the Calcutta High Court and Bongaon Court respectively, he managed to secure bail.
"He survived many attempts to his life. His former friends turned foes and wanted to kill him. But he didn't lie low and went on with his business. He said he didn't fear facing the law both here and in Bangladesh," Mrinmoy, who himself has been living in fear since his father's alleged abduction, told HT.
Sailen's wife and son have already moved a case in Barasat court and are desperately eyeing his return, so they could mount a protracted legal challenge.