Tennessee Code Title 37. Juveniles § 37-1-109

(a) If it appears to the court in a criminal proceeding that the defendant is a child, the court shall forthwith transfer the case to the juvenile court, together with a copy of the accusatory pleading and other papers, documents and transcripts of testimony relating to the case.

(b) It shall order that the defendant be taken forthwith to the juvenile court or to a place of detention designated by the juvenile court, or release the defendant to the custody of the defendant's parent, guardian, custodian or other person legally responsible for the defendant, to be brought before the juvenile court at a time designated by that court.

(c) The accusatory pleading may serve in lieu of a petition in the juvenile court unless that court directs the filing of a petition.