The irregularities, which involved alleged diversion of funds and transactions between the two firms and other group companies, came to light while it was auditing the books of the two companies for the first quarter ending June 2019, two persons close to the development said. PwC quit as auditor and informed the ministry of corporate affairs (MCA) about the reasons behind its departure, these persons said. This was conveyed to MCA on June 11 by Vivek Prasad, partner at PwC. ................ ET