Section 155 of the Act of 2001 is amended -
(a) by the substitution of the following subsections for subsections (1) to (3):
"(1) Where -
(a) a child is convicted on indictment of an offence and sentenced to detention in a children detention school,
(b) the period of detention is served initially in such a school,
(c) the child has attained the age of 18 years before the period of detention has expired,
the person shall be transferred to a place of detention provided under section 2 of the Act of 1970 or a prison to serve the remainder of the period of detention.
(2) If, on attaining the age of 18 years, the person -
(a) is engaged in a particular course of education or in training which is not available in such a place of detention or in a prison, or
(b) is nearing the end of his or her period of detention in the school,
the person may continue to be detained in the school beyond that age for a period not exceeding 6 months.
(3) Notwithstanding any provision in any enactment, no child
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