The Maple Grove fire chief is accused of sexually assaulting a teenage girl in spring 2017. Maddison Michael Zikmund, 36, is charged with third-degree criminal sexual conduct while in a position of authority. The City of Maple Grove placed him on leave while the criminal investigation proceeds. MAPLE GROVE, Minn. (FOX 9) - The Maple Grove fire chief is charged with criminal sexual conduct after a woman told law enforcement she was assaulted by him when she was a teenager in a fire explorer program.