CHAPTER FOUR—PROTECTION AND PROMOTION OF FUNDAMENTAL AND OTHER HUMAN RIGHTS AND FREEDOMS.
Human rights and freedoms during a state of emergency.
47. Detention under emergency laws.
Where a person is restricted or detained under a law made for the purpose of a state of emergency, the following provisions shall apply—
(a) he or she shall, within twenty-four hours after the commencement of the restriction or detention, be furnished with a statement in writing specifying the grounds upon which he or she is restricted or detained;
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.