Section 23

supply to a police officer or any other public officer a copy of any book or other documents seized, detained or taken possession of under section 16 or 18, or of any record of examination under section 21(1)(a), or of any written statement on oath or affirmation made under section 21(1)(c), or of any book or other document produced under section 21(1)(b), or otherwise in the course of any examination under section 21(1)(a), or under any written statement on oath or affirmation made pursuant to section 21(1)(c), and such police officer or other public officer may make such use of such copy of such record, statement, book or other document as may be necessary or expedient in relation to the exercise of his powers, the performance of his functions or the discharge of his duties, in respect of any person; or

allow a police officer or any other public officer to have access to and inspect any property, book, other documents, article of thing which had been produced before, or seized, detained or taken possession of, by an Inspector under this

Ordinance, and such police officer or other public officer may make such use of any knowledge gained by such access or inspection as may be necessary or expedient in relation to the exercise of his powers, the performance of his functions, or the discharge of his duties, in respect of any person.