Transparency International Bangladesh claim to have found involvement of a quarter of government employees, tuition centre’s and private stakeholders in the question leak, in a press conference on Wednesday.Nihar Ranjan Roy and Rumana Sharmin, deputy programme managers (research and policy), revealed the findings in the presser held at the institution’s Dhanmondi office.The regulator said they have found allegations of involvement of Bangladesh Chhatra League, student body of ruling Awami League, in it.Executive director of TIB said, From what we have found, we think it is a growing industry. It has not been possible to determine the business’ actual size.The research findings show money transaction upto Tk 20,000 taking place in the “business” that has been taking place “for four years since 2012”, TIB report added.