Citation: R v David John Dunn [2013] NSWSC 237
Court: Supreme Court of New South Wales
Date: 26 March 2013
Judge(s): Adamson J
Background
The offender, David John Dunn, pleaded guilty to two offences committed on consecutive days in September 2010. On the evening of 8 September, he entered a takeaway shop in Mount Warrigal while armed with a tomahawk axe and robbed the proprietor of $85. The following morning, he picked up a sex worker, Rebecca Apps, and later struck her repeatedly on the head with the same axe, killing her.
After the murder, the offender drove to a secluded bushland reserve, concealed the deceased's body in a ditch covered with a piece of tin, and attempted to destroy forensic evidence. A neighbour observed him dragging the body and called police, who arrested him at the scene shortly afterwards.
The offender was committed for trial in the Wollongong Local Court. Fitness-to-be-tried proceedings were initiated but ultimately resolved in favour of fitness. He was arraigned before the Supreme Court and entered guilty pleas on both counts.
Legal Issues
- What was the appropriate sentence for murder, having regard to the offender's intellectual disability and the presence of a delusional disorder at the time of the offence?
- Did a causal nexus exist between the offender's mental condition and the commission of the murder, reducing his moral culpability?
- What weight should be given to the aggravating and mitigating factors across both offences?
- How should the sentences for the two offences be structured to reflect overall criminality, including whether they should run concurrently or be partially accumulated?
Decision
Armed robbery: Adamson J found that the features identified in the sentencing guideline case of R v Henry [1999] NSWCCA 111 were present. The offence was committed in a commercial premises, during operating hours, with a dangerous weapon, and the victim was the sole occupant. These factors placed the offence at a level warranting a fixed term of three years imprisonment.
Murder and moral culpability: Three psychiatrists and a neuropsychologist gave evidence at the sentencing hearing. The experts established that the offender has an intellectual disability, which compromises his capacity to tolerate frustration and to regulate his responses in stressful situations. Expert evidence also indicated that he was suffering from a delusional disorder at the time of the killing, and Adamson J was satisfied that a causal nexus existed between that delusional state and the commission of the offence. Together, these factors reduced the offender's moral culpability, though they did not diminish the objective gravity of the murder.
The court acknowledged the absence of provocation by the deceased, as the offender himself conceded, and noted his attempts to conceal the body and destroy evidence. The guilty pleas, the offender's cooperation with police, his expression of remorse, and the adverse conditions he was likely to face in custody due to his intellectual disability were weighed as mitigating factors.
Totality: Because the two offences were committed on consecutive days and shared little connection, Adamson J held that partial accumulation was appropriate to reflect the full criminality of both offences. The murder sentence was ordered to commence on 9 March 2012 (following expiry of the armed robbery sentence from 9 September 2010), with the overall structure designed to give effect to the totality principle as affirmed in Pearce v The Queen.
Orders Made
- For armed robbery: fixed term of imprisonment of 3 years, commencing 9 September 2010.
- For murder: imprisonment of 19 years and 6 months, commencing 9 March 2012, with a non-parole period of 12 years and 6 months.
- Earliest eligible parole date: 8 September 2024.
Key Takeaways
- A causal nexus between a diagnosed delusional disorder and the commission of a homicide can reduce an offender's moral culpability at sentencing, even where the objective gravity of the offence remains high.
- Intellectual disability that diminishes an offender's capacity to tolerate frustration and regulate responses to stress is a recognised mitigating factor in sentencing for murder in New South Wales.
- Where two serious offences are committed on consecutive days but share little factual connection, partial accumulation of sentences is appropriate to ensure the total sentence reflects the overall criminality involved, consistent with Pearce v The Queen.
- The R v Henry guideline framework continues to apply to armed robbery sentencing, with the presence of multiple Henry features influencing the starting point for the sentence.
- Under established New South Wales sentencing law, victim impact statements are received and acknowledged by the court, but the loss suffered by the deceased and their family cannot be translated directly into any additional quantum of sentence.
Legislation and Cases Referenced
Legislation:
- Crimes (Sentencing Procedure) Act 1999 (NSW)
Cases:
- McLaren v R [2012] NSWCCA 284
- Muldrock v The Queen [2011] HCA 39; 244 CLR 120
- Pearce v The Queen [1998] HCA 57; 194 CLR 610
- R v Borkowski [2009] NSWCCA 102; 195 A Crim R 1
- R v Henry [1999] NSWCCA 111; 46 NSWLR 346
- R v Olbrich [1999] HCA 54; 199 CLR 270
- R v Previtera (1997) 94 A Crim R 76
- R v Thomson and Houlton [2000] NSWCCA 309; 49 NSWLR 383