India's One Mobikwik Systems falls on reporting unauthorised settlements

** One Mobikwik Systems MOBIKWIK falls 3.5% to 300.38 rupees

** Digital payments firm says some registered merchants, users colluded to claim unauthorized settlements of 400 mln rupees ($4.6 mln) from co

** Co adds it has recovered 140 mln rupees; estimated net impact due to alleged fraud at 260 mln rupees

** Says it is taking aggressive collection efforts while pursuing legal path to recover full amount

** YTD, ONEM falls ~49%

($1 = 87.7663 Indian rupees)