Tennessee Code Annotated section 8-8-201(b)(1) sets forth a list of statutes that include additional statutory duties of the office of sheriff. In addition, T.C.A. § 8-8-201(b)(2) charges the sheriff with performing such other duties as are, or may be, imposed by law or custom.  The duties listed in T.C.A. § 8-8-201 are not ex officio duties. See George v. Harlan, 1998 WL 668637, *2 (Tenn. 1998) (ex officio duties are defined as nonstatutory duties and ex officio services are defined as those services not required by statute). Some of the duties listed are applicable to the municipal chief of police as well as the sheriff.