NEW DELHI: A key person involved in the fake currency racket run from Pakistan was found poisoned to death by a National Investigation Agency (NIA) team in Rajasthan. NIA was following a lead on Bhojraj Singh in a case of a major seizure of Rs 20 lakh worth fake currency on a train in Delhi.The NIA, in a charge-sheet submitted recently in the case, has said the death of Singh has "affected the investigation as it now becomes difficult to ascertain the persons responsible for providing him funds for purchase of FICN and also to ascertain other people involved in the business".Two persons, Samir Mansuri and Kudarat Khan , were arrested from Farakka Express by the Delhi Police Special Cell on February 25 at the Old Delhi Railway station with Rs 20 lakh worth of high-quality FICN. They were coming from Malda and confessed that the consignment was to be delivered to Singh who would pay them a commission of 10% and had also paid them money to ‘buy’ the FICN from Bangladesh The NIA, after taking over the case, dispatched a team to Singh’s residence in Barod, Madhya Pradesh , on May 27 but found him to be absconding. "The team got information that Singh had been admitted in hospital in Jhalawar, Rajasthan, for poisoning," the NIA has said in its charge sheet.