5.—(1) If, before the expiration of 4 years from the date of his sentence, the Visiting Justices are satisfied that a person who is under supervision after his release from a reformative training centre under regulation 3 has failed to comply with any requirement for the time being specified in the notice given to him under regulation 4, the Visiting Justices may by order recall him to a reformative training centre.
(2) Any person so recalled shall be liable to be detained in the reformative training centre until the expiration of 3 years from the date of his sentence, or the expiration of 6 months from the date of his being taken into custody under the order, whichever is the later, and, if at large, shall be deemed to be unlawfully at large.
(3) Any order under paragraph (1) shall, at the expiration of 4 years from the date of the sentence, cease to have effect unless the person to whom it relates is then in custody thereunder.
(4) The Visiting Justices may at any time release a person who is detained in a reformative training centre under this regulation, and regulations 3 and 4 shall apply in the case of a person so released as they apply in the case of a person released under regulation 3.