statutory context
10 The principal objects of the Act, as stated in s 3, are (i) to codify the law relating to the extradition of persons from Australia to "extradition countries" (as defined in s 5) and to New Zealand; (ii) to facilitate the making of requests for extradition by Australia to other countries; and (iii) to enable Australia to carry out its obligations under extradition treaties.
11 Broadly speaking, under the Act, there are four stages in the process that may lead to the extradition of persons from Australia. First, an extradition country seeking the extradition of a person from Australia can apply to a magistrate under s 12 of the Act "for the issue of a warrant for the arrest" of that person. If the magistrate is satisfied by information on affidavit that "the person is an extraditable person in relation to the extradition country", then the magistrate is obliged to issue a warrant for the arrest of the person: s 12(1). The magistrate is also obliged to provide the Attorney-General with both a report that the warrant has been issued and a copy of the affidavit. Upon arrest under a s 12 provisional arrest warrant, the person is remanded by a magistrate in custody or on bail pursuant to s 15 of the Act.
12 An "extraditable person" is defined in s 6 of the Act as follows:
"Where:
(a) either:
(i) a warrant is or warrants are in force for the arrest of a person in relation to an offence or offences against the law of a country that the person is accused of having committed either before or after the commencement of this Act; or
(ii) a person has been convicted of an offence or offences against the law of a country either before or after the commencement of this Act and:
(A)there is an intention to impose a sentence on the person as a consequence of the conviction; or
(B)the whole or a part of a sentence imposed on the person as a consequence of the conviction remains to be served;
(b) the offence or any of the offences is an extradition offence in relation to the country; and
(c) the person is believed to be outside the country;
the person is, for the purposes of this Act, an extraditable person in relation to the country."
An "extradition offence" is relevantly defined in s 5 of the Act as follows:
"(a) in relation to a country other than Australia - an offence against a law of the country:
(i) for which the maximum penalty is death or imprisonment, or other deprivation of liberty, for a period of not less than 12 months; or
(ii) if the offence does not carry a penalty under the law of the country - conduct constituting which is, under an extradition treaty in relation to the country, required to be treated as an offence for which the surrender of persons is permitted by the country and Australia … ."
It is unnecessary for present purposes to set out the definition in the Act of "extradition objection": see s 7.
13 What, for present purposes, can be called the second stage of the process begins when the Attorney-General receives an extradition request from an extradition country. However, that the Attorney-General may receive an extradition request either before or after the person whose extradition is sought is arrested pursuant to the magistrate's warrant. Section 16 of the Act provides:
"(1) Where the Attorney-General receives an extradition request from an extradition country in relation to a person, the Attorney-General may, in his or her discretion, by notice in writing in the statutory form expressed to be directed to any magistrate, state that the request has been received.
(2) The Attorney-General shall not give the notice:
(a) unless the Attorney-General is of the opinion:
(i) that the person is an extraditable person in relation to the extradition country ; and
(ii) that, if the conduct of the person constituting the extradition offence, or any of the extradition offences, for which surrender of the person is sought, or equivalent conduct, had taken place in Australia at the time at which the extradition request was received, the conduct or the equivalent conduct would have constituted an extradition offence in relation to Australia; or
(b) if the Attorney-General is of the opinion that there is an extradition objection in relation to the extradition offence, or all of the extradition offences, for which surrender of the person is sought.
(3) As soon as practicable after the person is remanded under section 15 or the notice is issued, whichever is the later:
(a) a copy of the notice; and
(b) copies of the documents referred to in paragraph 19(2)(a) and, if applicable, paragraph 19(2)(b);
shall be given to the person."
Section 17 provides for release from remand in the event that the Attorney-General decides not to issue a s 16 notice or for any other reason considers that the remand should cease: s 17(2).
14 Leaving aside the situation where a person consents to being surrendered under s 18, the third stage is reached when, following the giving of a s 16 notice, proceedings are taken before a magistrate under s 19 to determine whether the person whose extradition is sought is eligible for surrender in relation to the extradition offence or offences relied on by the extradition country. A series of conditions or criteria are specified in s 19(2) by reference to which the magistrate must determine whether the person is eligible for surrender. Those conditions or criteria do not include whether the person is an extraditable person, as defined in s 6. Section 21 of the Act provides for review by this Court of the magistrate's order under s 19(9) or (10) of the Act.
15 Finally, once a person has been determined to be eligible for surrender and has become an "eligible person" (as defined in s 22(1)), the Attorney-General is then obliged to determine under s 22 whether the person is to be surrendered to the extradition country. Section 22(3) sets out a series of conditions or criteria which must be satisfied before the eligible person can be surrendered. In Director of Public Prosecutions (Cth) v Kainhofer (1995) 185 CLR 528 ("Kainhofer") at 538, Brennan CJ, Dawson and McHugh JJ observed:
"The powers conferred by the Act, other than those conferred on a court by s 21, are administrative in nature. They are exercisable by different repositories in sequence, but none of them authorises the repository of a power to review the exercise of a power by another repository earlier in the sequence."
16 A critical part of the statutory context in the present case is the Treaty on Extradition between Australia and Mexico ("the Treaty"). Pursuant to s 11(1)(a) and (1C) of the Act, reg 5 of the Extradition (United Mexican States) Regulations 1991 ("the Regulations") provides that the Act applies in relation to Mexico subject to the Treaty (which is set out in the Schedule to the Regulations). Article 1 of the Treaty records that:
"The Parties agree to extradite to each other, in accordance with the provisions of this Treaty, persons against whom criminal proceedings have been initiated or who are wanted for the imposition or enforcement of a judicial sentence involving deprivation of liberty for an extraditable offence."
Article 2 identifies what are, for the purposes of the Treaty, "extraditable offences". It states in par 1:
"For the purposes of this Treaty, extraditable offences are those offences, however named, which are punishable under the laws of both Parties by a penalty no less severe than deprivation of liberty for a maximum period of at least one year."
Article 8, under the heading "Exceptions to Extradition", states:
"Extradition shall not be granted when criminal proceedings can no longer be instituted by reason of lapse of time or any other cause in accordance with the law of either Party."
17 The Treaty provides, in art 15, for requests for extradition to be made in "writing through the diplomatic channel". Under the heading "Documentary Requirements", art 16 provides:
"(1) The following documents, accompanied by a translation into the language of the Requested State, shall be sent with the extradition request:
(a) a statement of the acts or omissions for which the extradition is requested, indicating as precisely as possible the time and place of their commission and their legal description;
(b) the original or authenticated copy of the warrant of arrest, warrant of commitment, conviction or sentence, if imposed, or any other judicial order made under the laws of the Requesting Party which authorizes the arrest of the person and from which the existence of the offence and its commission by the person sought may be reasonably inferred;
…
(2) To the extent permitted by the law of the Requested Party, extradition of a person may be granted pursuant to the provisions of this Treaty, notwithstanding that the requirements of this Article have not been complied with, provided that the person sought consents to an order for his extradition being made."
Article 17 provides:
"If the details or documents sent with the request for extradition are insufficient or defective, the Requested Party shall inform the Requesting Party of the omissions or defects which may be corrected, before the request will be submitted to the judicial authority."
18 The decision on the request for extradition is also to be communicated to the requesting party through the diplomatic channel: see art 21.1.