Chapter 3 Investigations
Article 22.
Collection of Evidence
(b) Methods of gathering evidence include: witnesses interviews; interrogations; line-up procedures; inspections; searches; seizure; expert evaluations and interviews; and collection of physical evidence.
1. States Parties shall, in accordance with the provisions of this Part and under procedures of national law, comply with requests by the Court to provide the following assistance in relation to investigations or prosecutions:
(b) The taking of evidence, including testimony under oath, and the production of evidence, including expert opinions and reports necessary to the Court;