TITLE II
CHAPTER I
INTERNATIONAL LETTERS ROGATORY FROM ABROAD
Art. 23
(Service of a summons on a prosecuted person)
1. A summons to appear relating to a prosecuted person who is in the territory of the Republic of San Marino shall be transmitted to the competent authority of the Republic of San Marino at least 40 days before the date set for appearance.
Service of documents - national procedures for ICC proceedings
EDIT.