new delhi the cbi has filed a fresh chargesheet against gokulnath shetty the punjab national bank deputy manager who allegedly helped nirav modi and mehul choksi perpetrate rs 13000crore fraud and his wife for amassing disproportionate assets worth rs 263 crore officials said on fridaythe agency has charged shetty and his wife asha latha shetty a clerk in indian bank under corruption charges for amassing assets worth over rs 428 crore during the period 201117 when the scam was being perpetrated at the brady house branch of pnb in mumbai where he was posted they saidof the total assets the cbi alleged they could not provide satisfactory explanation for assets worth rs 263 crore which were 238 times disproportionate to their known sources of incomethe cbi looked into the relationship between shetty and nirav modichoksi during which it dug into the assets amassed by the retired deputy manager they saidthe agency has registered a separate fir in november 2018 against shetty and his wife to look into their assetsit emerged that against a genuine income of rs 7252 lakh during a sixyear period shetty couple had assets in their as well as family members names primarily in the form of flats in mumbai the cbi allegedin its chargesheet filed before a mumbai special court recently the agency has said that they had purchased a flat worth rs 4662 lakh in goregaon while paid advance booking amount for three more flats in various localities of mumbai and neighbouring areasin addition the agency also detected fixed deposits bank balance and recurring accounts of over rs 75 lakhafter computing investments income and expenditure the cbi concluded that shetty and his wife allegedly amassed disproportionate assets to the tune of rs 263 crore during 201117 they saidthe cbi has already filed chargesheets against modi and choksi in which role of shetty presently in judicial custody is given they said shetty who is alleged to have played a key role in the rs 13700crore loan fraud while working as the deputy manager at pnbs brady house branch in mumbai was arrested in march 2018the scam surfaced when the companies owned by nirav modi and choksi approached the brady road branch in january 2018 after the retirement of shetty in 2017 seeking renewal of letter of undertaking lou for payments to suppliersshetty the then deputy manager at brady house branch of the pnb had continued in the same seat for seven years and issued fraudulent lous with impunity the cbi has allegedit is alleged that shetty albeit a junior officer enjoyed clearance level much higher than his post which gave him full powers in finacle internal software used by pnb for verifying large transactionsit is alleged shetty bypassed pnbs core banking system finacle and issued lous fraudulently they saidthe investigations revealed that messages for fraudulent lous were sent to overseas banks by misusing international messaging system for banking called swift platform and without making their subsequent entries in finacle thus bypassing any scrutiny of such funds