s 3 Arrest and production before a Magistrate
(1) A police officer may without a warrant arrest any person if he has reason to believe that grounds exist which would justify the holding of an inquiry into the case of that person under this Act. (2) Any person arrested under subsection (1) shall, unless sooner released, be taken without unreasonable delay, and in any case within twenty-four hours (excluding the time of any necessary journey) before a Magistrate.