P.R. Laws Ap. tit. 32A, § III, Rule 4.7
(a) Whenever the person to be served is not domiciled in Puerto Rico, the General Court of Justice shall take jurisdiction over said person if the action or claim arises because said person:
(1) Transacted business in Puerto Rico personally or through an agent; or
(2) participated in tortious acts within Puerto Rico personally or through his agent; or
(3) was involved in an automobile accident while driving a motor vehicle in Puerto Rico personally or through his agent; or
(4) was involved in an accident in Puerto Rico while operating, personally or through his agent, a freight or passenger transportation business in Puerto Rico, between Puerto Rico and the United States or between Puerto Rico and a foreign country, or if, in the operation of said business, an accident occurs outside Puerto Rico and the contract had been executed in Puerto Rico; or
(5) owns, uses or possesses, personally or through his agent, real property in Puerto Rico.
(b) In said cases, service shall be made pursuant to Rule 4.5.