After the Chicago Tribune found additional evidence of improprieties in the relationship between Redflex executives and consultants and Chicago officials. Redflex hired a "former Chicago inspector general, David Hoffman" to lead a new investigation. On 8 February 2013, Redflex received notification from the City of Chicago's Department of Procurement Services that it will "not be considered a responsible vendor for the new RFP for red light cameras that the City intends to issue in the near future." In response, Redflex Holdings chairman of the Australian Board of Directors Max Findlay, board member Ian Davis and the company's top sales executive resigned after being blamed for the company's problems in Chicago. Hoffman's report, delivered to the Redflex board in February 2013, found that Redflex had provided Bills with vacations and other gifts paid for by the expense account of Redflex Executive Vice-President Aaron Rosenberg. Hoffman also found that Redflex's president had knowledge of the arrangement and had lied to Chicago's administration about the extent of it. On 20 February, Redflex terminated Rosenberg and filed a lawsuit against him alleging "dishonest and unethical conduct". In a 1 March email addressed to all employees, Redflex Holdings chief executive officer and President Robert DeVincenzi, who took over the company in September 2012, announced the resignations of three top executives in its Phoenix, Arizona headquarters: former President & CEO Karen Finley; Redflex's General Legal Counsel Andrejs Bunkse and Chief Financial Officer Sean Nolen.