 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