Section 410.40. Notice to appear, warrant

1. Notice to appear. The court may at any time order that a person who
  is  under  a  sentence  of  probation or of conditional discharge appear
  before it. Such order may be in the form of a written notice, specifying
  the time and place of appearance, mailed to or  served  personally  upon
  the  defendant as the court may direct. When the order is in the form of
  such a notice, failure to appear as  ordered  without  reasonable  cause
  therefor  constitutes  a  violation  of  the  conditions of the sentence
  irrespective of whether such requirement is  specified  as  a  condition
  thereof.
    2.  Warrant.  If  at  any  time  during  the  period  of a sentence of
  probation or of conditional discharge the court has  reasonable  grounds
  to  believe that the defendant has violated a condition of the sentence,
  the court may issue a warrant to a police officer or to  an  appropriate
  peace  officer  directing  him or her to take the defendant into custody
  and bring the defendant before  the  court  without  unnecessary  delay;
  provided,  however, if the court in which the warrant is returnable is a
  superior court, and such court is not  available,  and  the  warrant  is
  addressed to a police officer or appropriate probation officer certified
  as  a  peace  officer, such executing officer may bring the defendant to
  the local correctional facility of the county in which such court  sits,
  to  be  detained there until not later than the commencement of the next
  session of such court occurring on the next  business  day;  or  if  the
  court  in which the warrant is returnable is a local criminal court, and
  such court is not available, and the warrant is addressed  to  a  police
  officer  or  appropriate probation officer certified as a peace officer,
  such  executing  officer  must  without  unnecessary  delay  bring   the
  defendant  before  an  alternate  local  criminal  court, as provided in
  subdivision five of section 120.90. A court which issues such a  warrant
  may  attach  thereto a summary of the basis for the warrant. In any case
  where a defendant arrested upon the warrant is brought  before  a  local
  criminal  court other than the court in which the warrant is returnable,
  such local criminal court shall consider such summary before  issuing  a
  securing order with respect to the defendant.
    * NB Effective until November 1, 2009