Assurance that the witness will not be prosecuted, detained or subjected to restriction of personal freedom

Australia

Australia - Mutual Assistance in Criminal Matters Act No. 85 1987 (2018)

Part IV—Arrangements for persons to give evidence or assist investigations
Division 1—Requests by Australia
19 Immunities
(1) Where a person is in Australia:
(c) be detained, prosecuted or punished in Australia for any offence that is alleged to have been committed, or that was committed, before the person’s departure from the foreign country pursuant to the request;

Part IV—Arrangements for persons to give evidence or assist investigations
Division 2—Requests by foreign countries
26 Requests for giving of evidence at hearings in foreign countries
(3) The matters in relation to which undertakings are to be given by a foreign country for the purpose of a request that a person give evidence in the foreign country are:
(a) that the person shall not:
(i) be detained, prosecuted or punished for any offence against the law of the foreign country that is alleged to have been committed, or that was committed, before the person’s departure from Australia;

Part IV—Arrangements for persons to give evidence or assist investigations
Division 2—Requests by foreign countries
27 Requests for assistance in relation to investigations in foreign countries
(3) The matters in relation to which undertakings are to be given by a foreign country for the purpose of a request that a person be removed to, or travel to, the foreign country for the purpose of giving assistance in relation to an investigation are:
(a) that the person shall not:
(i) be detained, prosecuted or punished for any offence against the law of the foreign country that is alleged to have been committed, or that was committed, before the person’s departure from Australia;

Rome Statute

Article 93 Other forms of cooperation

2. The Court shall have the authority to provide an assurance to a witness or an expert appearing before the Court that he or she will not be prosecuted, detained or subjected to any restriction of personal freedom by the Court in respect of any act or omission that preceded the departure of that person from the requested State.