ST. JOSEPH — For the second time since the Berrien County Public Defender’s Office opened three years ago, Berrien County is losing its chief public defender to a larger county.

Christopher Renna, who succeeded Carl Macpherson as chief public defender, has submitted his resignation effective March 20, county Administrator Bill Wolf told the Berrien County Board of Commissioners on Thursday. In a letter to Wolf, Renna said he has accepted a position as chief public defender for Kalamazoo County.