After six years, Colleyville’s Chief of Police Michael Holder is hanging up his badge. Holder’s last day is scheduled for Nov. 30. “It has been a true blessing to serve the citizens of Colleyville for the past six years, Holder said in a statement. “The Colleyville community is well served by the dedicated employees that provide exceptional service day in and day out. I am also extremely grateful to the members of the community who have supported me personally and professionally in ways too many to mention.” Under Holder’s leadership, Colleyville was annually recognized as one of the safest cities in Texas. The city saw a steady year-over-year drop in violent and property crimes, with Colleyville’s overall crime rate dropping by 52 percent since 2010. “Chief Holder was instrumental in modernizing every aspect of the Colleyville Police Department and introducing community policing, which strengthened relationships between the citizens and police,” Mayor Richard Newton said in a statement. Holder’s next opportunity brings home closer to home where he will serve as the assistant city manager in Kaufman, Texas. In order to fill the leadership role, the city will conduct a nationwide search for the next police chief. In the meantime, Assistant Police Chief Robert Hinton will serve in an interim role.