Construction of the provisions
21 Each of s 3E of the Crimes Act and s 22 of the Commission Act confers power on specified persons to apply for the issue of warrants to search premises and confers power on specified issuing officers to issue warrants to search premises. However, while the powers overlap, the prerequisites for their exercise differ. The question is whether that overlapping has the consequence of restricting the exercise of the powers conferred by s 3E.
22 The conferring of investigative powers by Parliament involves striking a balance between the beneficial purpose of detecting and preventing offences, on the one hand, and the equally beneficial purpose of regulating incursions into the personal liberties of the subject, on the other hand. The importance of the protection of the personal liberties of the subject gives rise to the traditional requirement, in the construction of statutes authorising incursions on such liberties, that the extent of the permitted incursion be stated with compelling clarity. It is of critical importance to the existence and protection of personal liberties that the circumstances in which a person may search private premises should be strictly confined, plainly stated and readily ascertainable (Donaldson v Brumby (1982) 40 ALR 525 at 526). If there is any ambiguity as to the extent of a power that would interfere with the personal liberties of a subject, the ambiguity should be resolved in favour of the subject. Where Parliament imposes safeguards for personal liberties in the exercise of search powers, those safeguards must be strictly observed.
23 Only an eligible person may apply for a warrant under s 22(2) of the Commission Act. An eligible person is defined by s 4 of the Commission Act as either an examiner appointed under s 46B(1) of the Commission Act or a member of the staff of the Commission who is also a member of a police force. A person must not be appointed as an examiner unless the person has been enrolled as a legal practitioner for at least five years. Thus, there is an express limitation on the class of persons who can apply under s 22.
24 Further, the eligible person must believe, on reasonable grounds, that, if a summons were issued for the production of the relevant thing, the thing might be concealed, lost, mutilated or destroyed. Under s 28 of the Commission Act, a summons for production of documents and things may be issued to a person. That would be the normal means whereby the Commission would obtain evidence. Section 22 is therefore an exceptional power.
25 An issuing officer must be satisfied as to the requirement that there be a risk that a thing might be concealed, lost, mutilated or destroyed. That is the effect of s 22(3): an issuing officer must not issue a warrant unless an affidavit has been furnished setting out the grounds upon which the issue of the warrant is being sought, the issuing officer has been given such further information as the issuing officer requires concerning the grounds and the issuing officer is satisfied that there are reasonable grounds for issuing the warrant.
26 Under s 22(5), the warrant must state certain things and include certain information. Thus, it must include a statement of the purpose for which the warrant is issued. That statement must include a reference to the special operation or investigation undertaken by the Commission. Further, the things of the relevant kind, the seizure of which is authorised by the warrant, must be connected with the operation or investigation undertaken by the Commission. In addition, the warrant must include a description of the kind of things authorised to be seized. Finally, the warrant must state the time of day or night when entry is authorised and must specify a date upon which the warrant ceases to have effect, being a date not later than one month after the date of issue. Those are safeguards for the protection of the personal liberties of the subject.
27 Section 3E also states safeguards, by way of prerequisites that must be satisfied before a warrant may be issued. The prerequisites for a valid warrant are similar to, but not identical to, those set out in s 22, which are summarised above. A requirement of s 3E(1) is that the issuing officer must be satisfied that there are reasonable grounds for suspecting that there is, or there will be within the next 72 hours, any evidential material at the relevant premises. Under s 3E(5), the issuing officer must state in the warrant the offence to which the warrant relates and the kinds of evidential material that are to be searched for under the warrant, as well as a description of the premises to which the warrant relates. However, under s 3E(6), a warrant issued under s 3E will also authorise the seizure of things other than the kinds of evidential material that are to be searched for, if the executing officer believes, on reasonable grounds, that seizure of that thing is necessary to prevent its concealment, loss or destruction or its use in committing an offence.
28 Thus, while, under both regimes, there is provision for seizure of a thing to prevent its concealment, loss or destruction, a prerequisite for the issue of a warrant under s 22 of the Commission Act is that the eligible person must believe, on reasonable grounds, that the subject of the warrant might be concealed, lost, mutilated or destroyed if a summons were issued for its production. On the other hand, a warrant under s 3E of the Crimes Act may be issued if the issuing officer is satisfied that there is or will be within the next 72 hours any evidential material at the relevant premises.
29 It follows that there are circumstances in which a warrant could be issued under s 22 but no warrant could be issued under s 3E. It also follows that there are circumstances when a warrant could be issued under s 3E but could not be issued under s 22. However, as a matter of logical analysis of the language of the two provisions, there are also clearly circumstances where a warrant could be issued under either to search the same premises for the same things. The question is whether, if the sole purpose for obtaining a warrant is to assist in a special investigation of the Commission, a warrant under s 3E is not authorised.
30 There is much to be said for the proposition that, apart from the provisions of s 3D(2) and s 22(10), Parliament may be taken to have evinced an intention that s 22 would be an exhaustive statement of the circumstances in which a warrant could be issued to assist a special investigation. That is to say, the investigative function of the Commission may call for the seizure of things where an eligible person believes, on reasonable grounds, that there is a risk that the thing might be concealed, lost, mutilated or destroyed. However, where there are no reasonable grounds for believing that such a risk exists, the searching of premises by the Commission is not authorised and the Commission must rely on its power to issue a summons. In other words, the more general operation of the power under the Crimes Act does not cut down the prerequisites of the Commission Act in the specific circumstances to which the latter applies. Where the provisions of s 22 apply, the only power of interference with the personal liberties of the subject by searching is that conferred by s 22. That power is subject to the prerequisites of s 22 and if those prerequisites are not satisfied, the power cannot be exercised.
31 However, the proposition is difficult to maintain in the light of s 22(10) and s 3D(2). If s 22 had not been enacted, there would be no basis for contending that the power conferred by s 3E could not be exercised. The appellant's contention is that s 22 should be given a construction that cuts down the extent of the power conferred by s 3E. That is to say, an effect of s 22 is to derogate from the power conferred by s 3E. Section 22(10), however, says quite the opposite. Thus, nothing in s 22 is to affect the right of a person to apply for a warrant that exists otherwise than by virtue of s 22, such as a right that exists by virtue of s 3E. Similarly, by the operation of s 22(10), nothing in s 22 is to affect the power of a person to issue a warrant under a power existing otherwise than by virtue of s 22, such as a power existing by virtue of s 3E. Section 3D(2) has much the same effect. Thus, even though s 22, being another law of the Commonwealth, provides power to search premises and seize things, a similar power conferred by Part 1AA, namely, s 3E(1), may be used despite the existence of the power under s 22 of the Commission Act to apply for and to issue warrants relating to the search of premises and seizure of things.
32 Sections 22(10) of the Commission Act and 3D(2) of the Crimes Act make clear that the power conferred by s 3E is not to be cut down in any way by the operation or the existence of s 22. It follows that the construction of those provisions contended for by the appellant must be rejected.