Questioning and inquiries, provided they are directed to, confirming or dispelling the suspicion on which the arrest was based, may therefore be occasioned by a number of factors, including:
· geographical considerations
· time of day when the rest takes place
· the making of a statement by the arrested person in relation to the offence for which the person was arrested or other offences and the taking of a record of interview
· the necessity to provide the arrested person with medical treatment
· the necessity to interview the alleged victim and/or available witnesses
· the necessity to interview alleged co-offenders
· the proper assessment of material relevant to conducting an interview
· the necessity to seek legal advice on framing the correct charge
· the necessity in special cases to await the arrival of experienced investigators or other persons with the necessary scientific, technical, investigative, etc., skills to conduct the interview, particularly a complex or serious offences are involved
· the necessity to await the arrival of an interpreter, legal practitioner, or in the case of child offenders, a parent, friend, etc., whose presence is necessary
· awaiting the results of medical or other necessary examinations
· in some special cases, the necessity to convey the arrested person to some location for the purpose of obtaining evidence relevant to the suspected offence
· the necessity to conduct an identification parade (with the consent of the person arrested)
· the necessity to conduct procedures authorised under S.353A of the Crimes Act.
26 It will be obvious that these Instructions are inconsistent with the approach of the majority of the judges in Williams and are inconsistent with a requirement that there be no delay in taking a suspect before a magistrate in order to carry out an investigation of the offence for which the person was arrested or any other offence notwithstanding that such investigations might be reasonable. The Instructions might find support in the judgment of Gibbs CJ but his Honour was in the minority. However on the basis of the Instructions the conduct of Det Ahern in continuing the interview after it was interrupted at 9.07am was fully justified.
27 It cannot be gainsaid that the proceedings before me are of the utmost seriousness, being the prosecution of the accused for two counts of murder. This is one of the matters to be taken into account in determining whether to admit the second part of the interview: see s 138(3)(c) of the Act.
28 The evidence is important because the Crown's case is that the accused did not tell the police the truth in the interview about the events surrounding the killing of his parents: see s 138(3)(b) of the Act. The Crown case is a circumstantial one in which it seeks to prove that the accused's account given in the record of interview as a whole is not true. If the jury were satisfied beyond reasonable doubt that the version given by the accused is false, rather than simply inaccurate, then it must follow that the accused killed his mother and father because, on the Crown case, there is no other reasonable explanation open. As I understand the situation, the Crown intends to lead evidence that would point to the same person killing all three persons. But that evidence is not so powerful that it might itself satisfy the jury beyond reasonable doubt of the accused's guilt.
29 To a significant extent the importance of the evidence and its probative value are connected in this case: see s 138(3)(a) of the Act. The defence argues that most of what is contained in the second part of the interview is referred to in the first part. That might be so, but it is obvious that the Crown case or its arguments are strengthened by additional material in the second part of the interview in which the accused elaborates on what is contained in the first part of the interview. The force of the Crown's argument, that what the accused said to the police is either inherently unbelievable or can be proved by other evidence to be false, would be substantially lessened in my view by the rejection of the second part of the interview.
30 I am of the opinion that it is impossible to consider the probative value of any particular piece of evidence contained in the second part of the interview in isolation or by simply having regard to what was said in the first part of the interview. As I have indicated, the Crown will be asking the jury to consider the accused's account as a whole, even though it may place more weight on one particular part of the account than another. It will be asking the jury to find that there is no other reasonable possibility open other than the account is generally false and, therefore, it must follow that he killed his parents as well as his brother.
31 I accept that some part of the second interview may have insufficient relevance and should be rejected, but under s 137 or s 135 of the Act rather than under s 138. I have already indicated that questions 411 to 449 are rejected on the basis that their relevance is outweighed by the prejudice that would flow from the manner in which police, who were apparently under a misapprehension of what the accused was saying, questioned the accused. There may be other specific questions and answers that ought not to be in evidence for reasons other than that portion of the interview in which they occur was obtained while the accused was in illegal detention.
32 I have already referred generally to the gravity of the impropriety; see s 138(3)(d). It is always a serious infringement of a person's liberty to fail to take the person before a court but rather to hold the person in police custody in breach of the law. But not all illegal detentions should be considered to have the same seriousness notwithstanding the condemnation that attaches to the unlawful infringement of the liberty of any citizen. As I have already indicated the period of the illegal detention here was for a relatively short period of time, about 50 minutes. I accept that the accused probably thought that he was being detained, but it was not against his will and there is no evidence that the illegal detention had any relevance to the contents of the interview. Other than being detained there is not the slightest evidence to suggest that the accused was in any way mistreated in the period of his detention while the interview was completed.
33 The fact that the illegal period of detention follows a period of about four hours while the accused was being held at the police station does not seem to me to greatly change the situation. There is no evidence that the accused wished to leave the police station or even believed that he was being detained at the police station during that period. I have no doubt that he went with the police willingly from the scene and was prepared to wait for the opportunity to give his account of the events to police.
34 Det Ahern made a conscious decision not to take the accused before a justice when the interview was interrupted at 9.07am. But I have no doubt that he believed that he was permitted to continue the interview at that time. It was open to him to hold that view in light of the width of the police Instructions. There is no evidence that he knew those Instructions did not accurately reflect the law. It was reasonable for him to complete the interview in light of the Commissioner's Instructions and having regard to the fact that he was still determining whether to charge the accused with the murder of his parents. It is important to note that the circumstances surrounding the three deaths were intertwined arising as they did from a single event yet it did not follow, that because the accused might have committed one of the killings, he did or did not commit the other two. Although the detective intentionally took a course that breached the law in deciding not to take the accused before a court, he did not deliberately act illegally because he was unaware that he was breaching the law. Rather he believed that he was not acting illegally. He was neither negligent nor reckless in respect of the accused's rights and his breach of them: see s 138(3)(f) of the Act.
35 Generally speaking the detention of the accused after 9.07am was in breach of clause 1 of Article 9 of the International Covenant on Civil and Political Rights. It states: