The leader of the Iowa State Patrol is retiring after a 32-year career with the force. The service retirement of Col. Michael Van Berkum was approved Monday and will be effective in January. He had been the patrol's chief since 2015. In a statement to The Associated Press, Department of Public Safety Commissioner Roxann Ryan says Iowans should thank Van Berkum for his decades of service. She says he embodies the best of the patrol - "leadership, integrity and dedicated service for the public good. In announcing his retirement Ritzman said, “It has been the honor and privilege of my life to serve the men and women of the Iowa State Patrol as their colonel. In my eyes, there is no finer group of troopers or people.” "Ryan has not named a replacement for Van Berkum, but the department says more information will be released when he retires next week.