相关规则
Peru
Practice Relating to Rule 128. Release and Return of Persons Deprived of Their Liberty
Section D. Voluntary nature of return
Peru’s IHL Manual (2004) states:
Some prisoners of war may decline to be repatriated because they fear the consequences they might face when they return to their own country. For example, they may be accused of treason or aiding the enemy, because they are residents in the country of the detaining power or a third State. In such circumstances, the prisoner of war should not be repatriated and an alternative solution should be found. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 52.e.
Peru’s IHL and Human Rights Manual (2010) states:
Some prisoners of war may decline to be repatriated because they fear the consequences they might face when they return to their own country. For example, they may be accused of treason or aiding the enemy because they are residents in the country of the detaining power or a third State. In such circumstances, the prisoner of war should not be repatriated and an alternative solution should be found. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 53(f), p. 261.