Tennessee Code Title 29. Remedies and Special Proceedings § 29-21-111

(a) The writ may be served by the sheriff, coroner, or constable, or any other person appointed for that purpose by the court or judge by whom it is issued or allowed.

(b) If served by any other person than the sheriff, that person possesses the same power, and is liable to the same penalty for nonperformance the duty performed by that person, as though the person were the sheriff.