AI-generated summaries. Not legal advice. Always verify against the official judgment on NSW Caselaw.
← All decisions
District Court 15 April 2026

R v Smith

[2026] NSWDC 131

Sexual offences
RELEVANCE

Citation: [2026] NSWDC 131
Court: District Court of New South Wales
Date: 15 April 2026
Judge(s): Fitzsimmons SC DCJ

Background

The accused was charged with a single count of sexual intercourse without consent contrary to s 61I of the Crimes Act 1900 (NSW). The Crown alleged that on 9 November 2019, the accused penetrated the complainant's vagina with his penis while she was asleep on a bed at a private residence in Albion Park, following a day of socialising and drinking alcohol.

The accused admitted in a recorded police interview that he lay on the bed next to the complainant and that physical contact occurred, including placing his hands down her pants and touching the outside of her genitalia. He denied removing any of the complainant's clothes and denied penile or digital penetration of the complainant's vagina. The central issue at trial was therefore whether penile-vaginal penetration occurred.

Before trial, the accused sought to exclude Crown expert DNA evidence on two grounds: that the evidence was not relevant under s 55 of the Evidence Act 1995 (NSW), or alternatively, that it should be excluded under s 137 because its probative value was outweighed by the danger of unfair prejudice.

  • Whether Crown expert DNA evidence from a Sexual Assault Investigation Kit (SAIK) was relevant under s 55 of the Evidence Act 1995 (NSW), given alternative explanations for the presence of the accused's DNA in the complainant's vaginal region.
  • Whether, if relevant, the DNA evidence should be excluded under s 137 of the Evidence Act 1995 (NSW) on the basis that its probative value was outweighed by the danger of unfair prejudice to the accused.

Decision

The DNA analysis was not in dispute: the accused's DNA was found on external labial, low vaginal, and high vaginal swabs, with statistical likelihoods exceeding 5,600 times that the DNA originated from the accused rather than an unknown unrelated male. The defence argument centred not on the DNA findings themselves, but on whether they could rationally support the Crown's case that penile-vaginal penetration occurred, given the accused's alternative account of external touching only.

Three experts gave evidence on the voir dire. The Crown's expert, Ms Campbell, opined that the presence of the accused's DNA in the internal vaginal areas required some form of internal deposition, whether by direct contact with a penis, finger, or other object, or by an intermediary transferring the DNA internally. She considered that external rubbing over clothing, or even skin-on-skin contact with the external genital area, could not adequately explain the DNA findings in the high and low vaginal swabs. The defence expert, Dr Roebuck, observed it was "not possible" to determine whether the DNA resulted from penetration, indirect transfer (such as via the complainant's hands), or contamination during the medical examination.

A key issue on the voir dire was whether proper decontamination procedures were followed during the SAIK examination. Dr Ellacott, the examining doctor, gave evidence that appropriate contamination prevention measures were undertaken. She produced a copy of the clinical notes bearing a decontamination kit lot number sticker, which had not been present on the carbon copies provided to the parties. Ms Campbell's evidence was that if proper contamination prevention measures were followed, the chance of DNA transfer during the medical examination was low, though the judgment text is truncated before the full conclusion on this point is recorded.

Based on the available text, the court conducted a detailed voir dire examining the competing expert opinions on how the accused's DNA came to be present in the complainant's internal vaginal area, and the adequacy of decontamination procedures during the forensic examination. The truncation of the judgment means the final ruling on admissibility is not fully set out in the available text, though the court's analysis clearly engaged with both s 55 relevance and s 137 unfair prejudice considerations.

Orders Made

  • The full orders are not available from the truncated text of the judgment. The matter was listed for trial commencing 20 April 2026, and the voir dire ruling addressed the admissibility of the Crown's DNA evidence ahead of that trial.

Key Takeaways

  • The District Court examined whether DNA evidence could be considered relevant under s 55 of the Evidence Act 1995 (NSW) where alternative, non-criminal explanations existed for the presence of the accused's DNA, including indirect transfer and possible contamination during medical examination.
  • Crown expert evidence distinguished between direct deposition of DNA (via a penis, finger, or object) and indirect transfer via an intermediary, with the opinion that internal vaginal DNA findings were not adequately explained by external contact alone.
  • The defence expert's position that it was "not possible" to determine the mechanism of DNA deposition highlighted the limits of forensic evidence in distinguishing between penetration and other forms of transfer.
  • Adequacy of forensic decontamination procedures during a SAIK examination was identified as a significant factual question bearing on the reliability and probative value of DNA evidence.
  • Under ss 55 and 137 of the Evidence Act 1995 (NSW), the case illustrates the interplay between relevance and discretionary exclusion in the context of expert DNA evidence where the mode of deposition, rather than the identity of the contributor, is the contested issue.

Legislation and Cases Referenced

Legislation:
- Crimes Act 1900 (NSW), s 61I
- Evidence Act 1995 (NSW), ss 55, 137

Cases cited:
- Adam v The Queen (2001) 207 CLR 96; [2001] HCA 57
- R v SG [2017] NSWCCA 202
- IMM v The Queen (2016) 257 CLR 300; [2016] HCA 14
- TL v The King [2022] HCA 35
- R v Riley, Christopher [2020] NSWCCA 283
- R v Burton [2013] NSWCCA 335
- R v Gregory-Roberts [2016] NSWCCA 92
- The Queen v Bauer (2018) 92 ALJR 846
- R v Falzon (2018) 264 CLR 361
- R v KE [2019] NSWDC 349
- DPP v Wise [2016] VSCA 173
- R v Kalajzich (1999) 39 A Crim R 415
- R v Berrill [1982] Qd R 508; 5 A Crim R 431