N.Y. Crim. Proc. Law § 430.30

§ 430.30 Duty to deliver defendant.\n In counties contained within New York City and in counties that have a\ncommissioner of correction who is responsible for detention of\ndefendants in criminal actions, it is the duty of the commissioner of\ncorrection of such city or county to deliver the defendant forthwith to\nthe proper institution in accordance with the commitment. In all other\ncounties it is the duty of the sheriff to deliver the defendant\nforthwith to the proper institution in accordance with the commitment.\n