II. Specific provisions
D. Custody pending surrender, surrender and transit
Custody pending surrender and orders for surrender
Article 27
(a) at the request of the International Criminal Court
(2) Should there be significant doubts as to the identity of the person arrested, the judge of the princely court shall order appropriate investigations or ask the International Criminal Court to submit additional information. In any event, the judge of the princely court shall inform the accused person of the grounds of the warrant of arrest issued against him or her by the International Criminal Court and about his or her rights to challenge the surrender on account of a violation of the principle of “ne bis in idem” in article 20 of the Rome Statute or of a lack of jurisdiction on the part of the International Criminal Court pursuant to articles 17 to 19 of the Rome Statute. In addition, the person shall be informed of his or her right, pending a surrender order, to apply for interim release. The accused person shall be provided with copies (photocopies) of the arrest warrant or of the relevant allegations and provisions of the Rome Statute together with the translations of them provided by the International Criminal Court.
Rights during investigation - informed of belief that crime has been committed
EDIT.