Notification of the issue of a telephone intercept warrant to a carrier the day after the warrant is issued satisfies the requirement of 'immediately' in s 60(1)(c) of the TIA Act. A breach of s 60(1)(d) (provision of a certified copy of the warrant) is unlikely to constitute a substantial irregularity under s 75 because the purpose of s 60(1)(d) is to establish an audit trail, not to serve as a precondition to interception authority. A patently erroneous s 61(1) certificate should be put to one side where a corrected certificate has been issued. A trial judge who excludes evidence on a basis not raised by the party seeking exclusion may deny procedural fairness to the opposing party.
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