COMPETITION WATCHDOG TO INVESTIGATE BANKING SECTOR: * Investigate prices charged for residential mortgages across entire market, including by major banks, smaller banks, and non-bank lenders; * Consider how banks make pricing decisions, including passing on movements in the official cash rate; * Examine differences in prices paid by new and existing customers; * Examine differences between reference interest rates published by suppliers and interest rates paid by customers; and * Investigate barriers that may prevent consumers from switching lenders. Australian Associated Press