Complex sentence: On 9 September 1927, Stephenson released lists of public officials who were or had been on the Klan payroll and he was also interviewed by the "Indianapolis Times", which proceeded with an extended investigation of the Klan's political ties.
Split into simpler sentences: On 9 September 1927, Stephenson released lists of public officials who were or had been on the Klan payroll. The "Indianapolis Times" interviewed Stephenson and proceeded with an extended investigation of the Klan's political ties.