Related Rule
Chile
Practice Relating to Rule 99. Deprivation of Liberty
Section C. Prompt information on the reasons for deprivation of liberty
In 2002, in its third periodic report to the Committee against Torture, Chile stated:
The new Code [of Criminal Procedure] contains substantial changes in order to guarantee the protection of the detainee … Among these changes reference may be made to:
(a) Recognition of various rights of the accused as from the first act in the procedure against him: the right of the detainee to be informed of the reason for his detention and of his other rights. 
Chile, Third periodic report of Chile to the Committee against Torture, 28 October 2002, UN Doc. CAT/C/39/Add.14, submitted 18 February 2002, § 32(a); see also § 34.
In 2006, in its fifth periodic report to the Human Rights Committee, Chile stated: “Accused persons who have been deprived of their liberty also have the following rights: to be notified of the ground for their detention”. 
Chile, Fifth periodic report to the Human Rights Committee, 5 July 2006, UN Doc. CCPR/C/CHL/5, submitted 7 February 2006, § 155.
(footnote in original omitted)