N.Y. Criminal Procedure Law § 610.10: Securing attendance of witnesses by subpoena; in general

§ 610.10 Securing attendance of witnesses by subpoena; in general.

1. Under circumstances prescribed in this article, a person at

liberty within the state may be required to attend a criminal court

action or proceeding as a witness by the issuance and service upon him

of a subpoena.

2. A "subpoena" is a process of a court directing the person to whom

it is addressed to attend and appear as a witness in a designated action

or proceeding in such court, on a designated date and any recessed or

adjourned date of the action or proceeding. If the witness is given

reasonable notice of such recess or adjournment, no further process is

required to compel his attendance on the adjourned date.

3. As used in this article, "subpoena" includes a "subpoena duces

tecum." A subpoena duces tecum is a subpoena requiring the witness to

bring with him and produce specified physical evidence.