Related Rule
Sierra Leone
Practice Relating to Rule 99. Deprivation of Liberty
Section A. General
Sierra Leone’s Constitution (1991) states:
17. Protection from arbitrary arrest or detention.
(1) No person shall be deprived of his personal liberty except as may be authorised by law in any of the following cases …
29. Public Emergency.
(2) The President may issue a Proclamation of a state of public emergency only when –
a. Sierra Leone is at war; [or]
b. Sierra Leone is in imminent danger of invasion or involvement in a state of war; or
c. there is actual breakdown of public order and public safety in the whole of Sierra Leone or any part thereof to such an extent as to require extraordinary measures to restore peace and security; or
d. there is a clear and present danger of an actual breakdown of public order and public safety in the whole of Sierra Leone or any part thereof requiring extraordinary measures to avert the same; or
e. there is an occurrence of imminent danger, or the occurrence of any disaster or natural calamity affecting the community or a section of the community in Sierra Leone; or
f. there is any other public danger which clearly constitutes a threat to the existence of Sierra Leone.
(5) During a period of public emergency, the President may make such regulations and take such measures as appear to him to be necessary or expedient for the purpose of maintaining and securing peace, order and good government in Sierra Leone or any part thereof.
(6) Without derogating from the generality of the powers conferred by subsection (5) and notwithstanding the provisions of this Chapter, the regulations or measures may, so far as appears to the President to be necessary or expedient for any of the purposes mentioned in that subsection –
a. make provision for the detention of persons, the restriction of the movement of persons within defined localities, and the deportation and exclusion of persons other than citizens of Sierra Leone from Sierra Leone or any part thereof. 
Sierra Leone, Constitution, 1991, Sections 17(1) and 29(2)(a), 5 and (6)(a).
Sierra Leone’s Geneva Conventions Act (2012) states:
2. Grave breaches of the [1949 Geneva] Conventions and the [1977] First [Additional] Protocol.
(1) A person of whatever nationality commits an offence if that person, whether within or outside Sierra Leone[,] commits, aids, abets or procures any other person to commit a grave breach specified in –
(d) article 147 of the Fourth Geneva Convention [on, inter alia, the grave breach of unlawful confinement of a protected person]. 
Sierra Leone, Geneva Conventions Act, 2012, Section 2(1)(d).