Tennessee Code Title 4. State Government § 4-7-402

(a) The mission of the CID shall be to investigate, gather evidence and assist federal, state and local law enforcement in the prosecution of criminal offenses enumerated in § 4-7-404(3).

(b) The CID shall have original jurisdiction to enforce title 55, chapter 5, relative to automobile anti-theft, odometer and fraud prevention, as well as all criminal matters initiated by the highway patrol or other divisions of the department of safety, including, but not limited to, the investigation of vehicular homicides, vehicular assaults and traffic crashes involving death or serious bodily injury.