P.R. Laws Ap. tit. 32A, § III, Rule 57.3
No restraining order or preliminary injunction shall be issued except upon the giving of security by the applicant, in such sum as the court deems proper for the payment of such costs and damages as may be incurred or suffered by any party who is found to have been wrongfully enjoined or restrained. No such security shall be required of the Commonwealth of Puerto Rico, its municipalities, agencies, instrumentalities or of any of its officers acting in their official capacity.
Whenever these rules require or permit the giving of security by a party, each surety submits himself to the jurisdiction of the court and irrevocably appoints the clerk of the court as his agent upon whom any notice, summons or papers affecting his liability on the bond may be served. His liability may be enforced on motion without the necessity of an independent action. The motion and such notice of the motion as the court prescribes may be served on the clerk of the court, who shall forthwith mail copies to the sureties if their addresses are known.