On complaint being made to a justice of the peace . . . by a surety to a recognizance to keep the peace or to be of good behaviour entered into before a magistrates' court that the person bound by the recognizance as principal has been, or is about to be, guilty of conduct constituting a breach of the conditions of the recognizance, the justice may. . . issue a warrant to arrest the principal and bring him before a magistrates' court . . . or a summons requiring the principal to appear before such a court; but the justice shall not issue a warrant unless the complaint is in writing and substantiated on oath.
The magistrates' court before which the principal appears or is brought in pursuance of such a summons or warrant as aforesaid may, unless it adjudges the recognizance to be forfeited, order the recognizance to be discharged and order the principal to enter into a new recognizance, with or without sureties, to keep the peace or to be of good behaviour.
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