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15. Certain powers may be used only in accordance with Act. |
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16. Arrest of person in respect of whom section 15 applies may be authorised by District Court in certain circumstances. |
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17. Arrest in certain circumstances of person in respect of whom section 15 applies where person is in prison etc. |
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18. Search warrant in aid of investigation relating to relevant offences may be authorised by District Court in certain circumstances. |