Соответствующая норма
Chad
Practice Relating to Rule 161. International Cooperation in Criminal Proceedings
Section C. Extradition of own nationals
In 2007, in its initial report to the Committee against Torture, Chad stated: “Under article 447 of the Criminal Code, no extradition is permitted … [w]hen the person who is the subject of the request is of Chadian nationality”. 
Chad, Initial report to the Committee against Torture, 22 September 2008, UN Doc. CAT/C/TCD/1, submitted 4 September 2007, § 188.