Related Rule
Burundi
Practice Relating to Rule 31. Humanitarian Relief Personnel
Burundi’s Law on Genocide, Crimes against Humanity and War Crimes (2003) states:
[The following are] considered as war crimes:
B. Other serious violations of the laws and customs applicable in international armed conflicts, within the established framework of international law, namely, any of the following acts:
c) launching deliberate attacks against personnel … involved in a humanitarian assistance … mission … , as long as they are entitled to the protection given to civilians or civilian objects under the international law of armed conflict;
D. Other serious violations of the laws and customs applicable in armed conflicts not of an international character, within the established framework of international law, namely, any of the following acts:
c) launching deliberate attacks against personnel … involved in a humanitarian assistance … mission … , as long as they are entitled to the protection given to civilians or civilian objects under the international law of armed conflict. 
Burundi, Law on Genocide, Crimes against Humanity and War Crimes, 2003, Article 4(B)(c) and (D)(c).
Burundi’s Penal Code (2009) states:
“War crimes” means crimes which are committed as part of a plan or policy or as part of a large-scale commission of such crimes, in particular:
2. … [S]erious violations of the laws and customs applicable in international armed conflict, within the established framework of international law, namely, any of the following acts:
3°. Intentionally directing attacks against personnel … involved in a humanitarian assistance mission … , as long as they are entitled to the protection given to civilians … under the international law of armed conflict;
5. … [S]erious violations of the laws and customs applicable in armed conflicts not of an international character, within the established framework of international law, namely, any of the following acts:
3°. Intentionally directing attacks against personnel … involved in a humanitarian assistance mission … , as long as they are entitled to the protection given to civilians … under the international law of armed conflict. 
Burundi, Penal Code, 2009, Article 198(2)(3°) and 5(3°).
In 1996, in response to a letter written jointly by the Special Rapporteurs of the UN Commission on Human Rights on Extrajudicial, Summary or Arbitrary Executions and for Burundi following a deliberate attack on a vehicle carrying ICRC delegates, the President and the Prime Minister of Burundi wrote that they deplored the incident and indicated that they had requested an independent inquiry to identify the perpetrators. 
UN Commission on Human Rights, Special Rapporteur on Extrajudicial, Summary or Arbitrary Executions, Report, UN Doc. E/CN.4/1997/60/Add.1, 23 December 1996, § 87.