Based on established international procedures and standards, this attempts to be a detailed, actionable guide for reporting war crimes and crimes against humanity to international and national bodies.
This guide is in six sections. Above all, please be mindful at all times of your security and safety when reporting crimes.
War crimes or crimes against humanity may be reported by victims, witnesses, non-governmental organizations (NGOs), civil society groups, or any individual with credible information. Submissions are accepted by national law enforcement agencies (e.g. UK Counter Terrorism Policing), international judicial bodies such as the International Criminal Court (ICC), or INTERPOL’s Incident Response Team.
The ICC has jurisdiction over genocide, crimes against humanity, war crimes, and the crime of aggression. Before submitting information, determine whether the situation falls within ICC jurisdiction:
*Jurisdiction Requirements:*
[ICC Jurisdiction Overview](https://www.icc-cpi.int/about/how-the-court-works)
*Submission Process:*
The Office of the Prosecutor (OTP) accepts communications from any individual or group under [Article 15 of the Rome Statute](https://www.icc-cpi.int/sites/default/files/2024-05/Rome-Statute-eng.pdf).
Submissions should include:
Submissions can be made through the [online form] (https://otplink.icc-cpi.int) or by mail to the ICC OTP.
*Human Rights Council Complaint Procedure:*
The [Complaint Procedure](https://www.ohchr.org/en/treaty-bodies/human-rights-bodies-complaints-procedures/complaints-procedures-under-human-rights-treaties) addresses consistent patterns of gross and reliably attested violations of human rights and fundamental freedoms. The procedure is confidential and can be initiated regardless of country membership obligations.
*Treaty Bodies*
Depending on the nature of violations, complaints can be filed under Optional Protocols to:
*UN Security Council Referral*
For situations involving non-State Parties where the ICC lacks jurisdiction, advocacy can be directed toward Security Council members to [refer the situation](https://main.un.org/securitycouncil/en/content/current-members) under Article 13(b) of the Rome Statute.
Many States allow prosecution of international crimes regardless of where they were committed or the nationality of the perpetrator/victim. Key considerations:
The ICC and other tribunals accept:
Maintaining an unbroken chain of custody is essential for evidence admissibility:
1. *Documentation at Collection*
2. *Tamper-Evident Handling*
3. *Secure Storage*
*Metadata Preservation*
*Verification Techniques*
An effective submission to the ICC or UN mechanisms should include:
1. Executive Summary: A brief overview of allegations (1-2 pages).
2. Factual Matrix: A chronological account of the crime with specific dates, locations, and actors.
3. Legal Analysis: Reference to specific articles of the Rome Statute or human rights instruments.
4. Appendices:
The ICC accepts submissions in English, French, or any of the working language of the Court. The six languages the International Criminal Court has used for judgments and fundamental decisions are: Arabic, Chinese, English, French, Russian, and Spanish.
Language Rights at the ICC: Defendants have the right to use a language they fully understand, and other languages may be authorized in proceedings upon request.
UN Treaty Bodies have specific language requirements listed in [procedural guidelines] (https://www.ohchr.org/en/treaty-bodies).
Provide translations when possible. Machine translations should be noted as being so.
*Encrypted Channels*
*Device Security*
*Identity Protection*
*Physical Security*
*Documenting Security*
*Risk Assessment*
Before involving any witness, assess:
*Minimizing Exposure*
The ICC operates a [Victims and Witnesses Unit](https://www.icc-cpi.int/court-record/icc-01/05-01/08-972) that provides:
*Requesting Protection*
When submitting to the ICC, indicate clearly:
*National Systems*
Universal jurisdiction prosecutions often witness protection programs. However, capacity varies. Request information from national prosecutorial authorities about available measures.
*United Nations Interim Measures*
Under certain treaty procedures, the UN can request States to take [interim measures](https://www.ohchr.org/en/treaty-bodies/ccpr/individual-communications) to prevent irreparable harm to complainants or witnesses while cases are under review.
*ICC OTP*
*UN Mechanisms*
*National Prosecutions*
This guide to reporting War Crimes and Crimes Against Humanity should be supplemented with regular reviews of updated protocols from the ICC and UN bodies, as procedures and technologies evolve.
If your investigation uncovers specific evidence, consider collaborating with legal professionals to strengthen submissions.
All documentation and evidentiary work should prioritise the safety and dignity of survivors and witnesses above all other considerations.
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