N.Y. Criminal Procedure Law § 140.35: Arrest without a warrant; by person acting other than as a police officer or a peace officer; when and how made

§ 140.35 Arrest without a warrant; by person acting other than as a

police officer or a peace officer; when and how made.

1. A person may arrest another person for an offense pursuant to

section 140.30 at any hour of any day or night.

2. Such person must inform the person whom he is arresting of the

reason for such arrest unless he encounters physical resistance, flight

or other factors rendering such procedure impractical.

3. In order to effect such an arrest, such person may use such

physical force as is justifiable pursuant to subdivision four of section

35.30 of the penal law.