Rules on Criminal Procedure
Section 4. Execution of warrant. - The head of the office to whom the warrant of arrest was delivered for execution shall cause the warrant to be executed within ten (10) days from its receipt. Within ten (10) days after the expiration of the period, the officer to whom it was assigned for execution shall make a report to the judge who issued the warrant. In case of his failure to execute the warrant, he shall state the reasons therefor. (4a)