II. Specific provisions
B. Judicial assistance; procedural provisions
Article 17
Summonses
(2) The person summoned is not obliged to acquiesce to the summons. At the request of the person summoned, of the accused or of their counsel, the Ministry of Justice shall obtain from the International Criminal Court or International Tribunal the assurance that the person shall not be subject to prosecution, arrest or detention on account of an act engaged in prior to the person’s exit from the Principality of Liechtenstein.
EDIT.