Source: https://ihl-databases.icrc.org/customary-ihl/eng/print/v1_rul_rule68
Timestamp: 2019-04-22 15:08:48+00:00

Document:
Rule 68. Commanders may take the necessary precautions to prevent the presence of a parlementaire from being prejudicial.
This is a long-standing rule of customary international law already recognized in the Brussels Declaration and the Oxford Manual, and codified in the Hague Regulations. It has been restated in several military manuals. Some of these manuals are applicable in, or have been applied in, non-international armed conflicts. No official contrary practice was found.
Practice indicates that parlementaires may be temporarily detained if they have accidentally acquired information the disclosure of which to the adversary would have adverse consequences on the success of a current or impending operation. The permissibility of temporary detention is provided for in the Brussels Declaration and the Oxford Manual and codified in the Hague Regulations. The rule is restated in a number of military manuals. Some of these manuals are applicable in, or have been applied in, non-international armed conflicts. No official contrary practice was found.
 Brussels Declaration, Article 44 (cited in Vol. II, Ch. 19, § 236); Oxford Manual, Article 30 (ibid., § 237); Hague Regulations, Article 33 (ibid., § 235).
 See, e.g., the military manuals of Argentina (ibid., § 239), Belgium (ibid., §§ 240–241), Canada (ibid., § 242), Germany (ibid., § 243), Italy (ibid., § 244), New Zealand (ibid., § 245), Nigeria (ibid., § 246), Spain (ibid., § 247), Switzerland (ibid., § 248), United Kingdom (ibid., § 249), United States (ibid., § 250) and Yugoslavia (ibid., § 251).
 See, e.g., the military manuals of Germany (ibid., § 243), Italy (ibid., § 244) and Yugoslavia (ibid., § 251).
 Brussels Declaration, Article 44 (ibid., § 263); Oxford Manual, Article 31 (ibid., § 264); Hague Regulations, Article 33 (ibid., § 262).
 See, e.g., the military manuals of Argentina (ibid., § 266), Belgium (ibid., §§ 267–268), Canada (ibid., § 269), Germany (ibid., § 270), Italy (ibid., § 271), New Zealand (ibid., § 272), Nigeria (ibid., § 273), Spain (ibid., § 274), Switzerland (ibid., § 275), United Kingdom (ibid., § 276), United States (ibid., § 277) and Yugoslavia (ibid., § 278).
 See, e.g., the military manuals of Germany (ibid., § 270), Italy (ibid., § 271) and Yugoslavia (ibid., § 278).

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