N.Y. Crim. Proc. Law § 410.30
If at any time during the period of a sentence of probation or of conditional discharge the court has reasonable cause to believe that the defendant has violated a condition of the sentence, it may declare the defendant delinquent and file a written declaration of delinquency. When the court receives a request for a declaration of delinquency by a probation officer, it shall make a decision on such request within seventy-two hours of its receipt of the request. Upon filing a written declaration of delinquency, the court must promptly take reasonable and appropriate action to cause the defendant to appear before it for the purpose of enabling the court to make a final determination with respect to the alleged delinquency in accordance with section 410.70 of this article.
N.Y. Crim. Proc. Law § 410.30