Background
On 23 September 2024, Jacob Tammer-Spence encountered Sitaleki Filihiahekava and two friends while returning from collecting takeaway food in Marrickville. During a brief verbal altercation, Filihiahekava threatened to “pop” Tammer-Spence if he continued to “play dumb.” Believing that he might be shot, Tammer-Spence drew a knife he was carrying and struck Filihiahekava once in the chest. Filihiahekava, who had no firearm or other weapon, died at the scene.
Tammer-Spence fled, hid the knife in a neighbouring property and was arrested two days later. Initially charged with murder, he pleaded guilty before trial to manslaughter, and the Crown accepted that plea in full satisfaction of the indictment. The agreed basis was excessive self-defence: Tammer-Spence believed that force was necessary to defend himself, but stabbing Filihiahekava was not a reasonable response in the circumstances as he perceived them.
The Court’s Holding
Cavanagh J found the killing to be an objectively serious example of manslaughter. Although Tammer-Spence genuinely feared being shot and his PTSD-related hypervigilance helped explain his rapid reaction, he had seen no gun, made no attempt to withdraw and used a knife before Filihiahekava or his companions displayed a weapon or committed violence. His response was therefore unreasonable and excessive to a significant extent, not merely marginally excessive.
The Court held that Tammer-Spence’s moral culpability was reduced by his deprived and traumatic childhood under the Bugmy principles and by PTSD that was causally significant to the offending under the De La Rosa principles. Against that mitigation stood his serious history of violent offending, previous knife-related conduct, commission of the offence while on parole and poor rehabilitation prospects. After applying a 25 percent discount for his early offer to plead guilty and finding special circumstances, the Court imposed eight years and three months’ imprisonment, beginning 25 November 2024 and ending 24 February 2033, with a non-parole period of five years and five months and parole eligibility on 24 April 2030.
Key Takeaways
- In sentencing for manslaughter by excessive self-defence, the extent to which the defensive response exceeded what was reasonable is an important measure of objective seriousness.
- A traumatic and deprived background and causally significant PTSD reduced the offender’s moral culpability, but they did not outweigh the seriousness of the killing and the aggravating features.
- The early guilty plea produced a 25 percent discount, while special circumstances justified a longer-than-usual parole period relative to the head sentence.
Why It Matters
The decision illustrates the distinction between honestly believing defensive force is necessary and responding reasonably to the perceived danger. A genuine fear of being shot reduced the offence from murder to manslaughter, but the immediate use of a concealed knife against an unarmed person still attracted a substantial prison term.
It also shows how New South Wales sentencing courts separately assess objective seriousness and moral culpability. Trauma-related mitigation can remain significant even for an offender with an extensive violent record, but prior violence, offending on parole and the public carrying and use of a knife may strongly reinforce denunciation and specific deterrence.