An Act to consolidate and amend the law relating to the Criminal Procedure.
PART I - PRELIMINARY
CHAPTER V - OF ARREST, ESCAPE AND RETAKING
A.—Arrest generally
61. No police-officer shall detain in custody a person arrested without warrant for a longer period than under all the circumstances of the case is reasonable, and such period shall not, in the absence of a special order of a Magistrate under section 167, exceed twenty-four hours exclusive of the time necessary for the journey from the place of arrest to the Magistrate's Court.
Fair trial standards
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.