相关规则
Nigeria
Practice Relating to Rule 68. Precautions while Receiving Parlementaires
Section A. General
Nigeria’s Manual on the Laws of War provides: “The force commander (of the other side) … may take security measures to prevent the parlementaire from abusing his privileges for spying.” 
Nigeria, The Laws of War, by Lt. Col. L. Ode PSC, Nigerian Army, Lagos, undated, § 24.