Three years after Manu Kovi set homicide tariffs, a different bench of the Supreme Court said trial judges were free to ignore them. Both decisions are still cited, often in the same judgment.
Thress Kumbamong v The State [2008] PGSC 51; SC1017
Supreme Court, Mount Hagen — Salika, Kandakasi and Yagi JJ, 29 September 2008. SCRA 29 of 2007, appeal against sentence.
What happened
Mrs Kumbamong’s husband had been spending his time and money on another woman. She went to the woman and proposed that they all live together under one roof so that the husband could support both households. The other woman insulted her, picked up a knife from the table and attacked. Cornered, Mrs Kumbamong wrestled the knife away and stabbed her repeatedly on the head and back. The woman died at the scene.
She pleaded guilty to manslaughter, without raising provocation or self-defence, and was sentenced to nine years. She appealed, asking for five or six.
What was argued
She said she was unwell, that there had been provocation in the non-legal sense, and that the husband whose conduct caused it all had not been punished. The State said the trial judge had taken all of this into account and nine years was within the Kovi range.
What the Court decided
Identifiable error. The trial judge said he was taking the mitigating factors into account, but the sentence did not reflect them. That was an error the Supreme Court had to correct.
The sentencing discretion. The trial judge has a wide discretion under section 19 to impose the appropriate sentence, and the Supreme Court has no power to curtail, restrict or interfere with its free exercise. Guidelines set by earlier Supreme Court decisions that prescribe minimum and maximum ranges within the statutory maximum amount to legislating and restrict the discretion. Trial judges are not bound to follow them, and the Court said the Kovi ranges should not be followed as binding rules.
Principles reconsidered. Not every case is appropriate for imprisonment; not all offences are committed consciously; the focus should be on rehabilitation and on sparing offenders where appropriate. The Court also considered that the defences of provocation and self-defence ought to extend to innocent spouses who offend against adulterous partners or their lovers.
Result. The sentence of nine years was varied to a part-custodial, part-suspended term.
Did it make new law?
Kumbamong did not affirm a National Court decision; it corrected one. Its significance is doctrinal: it is the Supreme Court’s clearest statement that its own guideline judgments are guidance, not law. Later benches have not treated it as overruling Kovi; rather, the two are read together. Kovi supplies the starting point for consistency, and Kumbamong preserves the judge’s freedom to depart from it on the facts.
Why it matters
A sentence below the tariff is not, by itself, an error. The State cannot succeed on appeal merely by pointing to the range. It must show that the discretion miscarried.
Mitigation must be reflected, not just recited. A judge who lists mitigating factors and then imposes a sentence that ignores them commits an identifiable error under the Norris test.
The conduct of a third party is relevant. Where a husband’s infidelity drives a wife to kill his partner, that background goes to the seriousness of her offence.
What it does not decide
Kumbamong does not extend the legal defences of provocation or self-defence; the Court’s remarks on that subject were made in the context of sentence, and the defences remain as defined in the Criminal Code. An accused who wants to rely on them must still raise them at trial, as Mrs Kumbamong chose not to. Nor does it abolish the tariffs. The Kovi categories continue to be applied daily, with Kumbamong cited when a departure is sought.
Recent cases applying it
- Api v The State [2026] PGSC 80; SC2924 — the applicant relied on Kumbamong for the weight to be given to an early admission and a clean record.
- Kianga v The State [2025] PGSC 118; SC2815 — Kumbamong cited for the proposition that the trial judge has the discretion in imposing sentence.
- Bellie v The State [2022] PGSC 130; SC2325 — the Court accepted that a judge is not bound by the Kovi guidelines because section 19 confers a discretion to impose a lesser sentence.
- Warome v The State [2020] PGSC 73; SC1991 — on closely similar facts the Court endorsed Kumbamong: the husband’s conduct is a relevant consideration that should be reflected in the sentence.
Sources
- Thress Kumbamong v The State [2008] PGSC 51; SC1017 (Salika, Kandakasi and Yagi JJ, 29 September 2008)
- Criminal Code (Chapter 262) — ss 19, 266 to 270, 302
- Manu Kovi v The State [2005] PGSC 34; SC789; Norris v The State [1979] PGSC 18; [1979] PNGLR 605
- Api v The State [2026] PGSC 80; SC2924; Kianga v The State [2025] PGSC 118; SC2815; Bellie v The State [2022] PGSC 130; SC2325; Warome v The State [2020] PGSC 73; SC1991
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