Public Prosecutor v Ong Pang Siew: Culpable Homicide Sentencing After Diminished Responsibility Finding

In Public Prosecutor v Ong Pang Siew, the High Court of Singapore sentenced Ong Pang Siew to 10 years' imprisonment for culpable homicide not amounting to murder. This followed the Court of Appeal's decision to reduce his original murder conviction based on the defense of diminished responsibility. The case was remitted to the High Court to determine the appropriate sentence. The court considered the circumstances of the crime, the accused's mental state, and psychiatric reports before arriving at the sentence, backdated to the date of the offense.

1. Case Overview

1.1 Court

High Court

1.2 Outcome

The accused was sentenced to 10 years’ imprisonment backdated to 20 October 2007.

1.3 Case Type

Criminal

1.4 Judgment Type

Grounds of Decision

1.5 Jurisdiction

Singapore

1.6 Description

Sentencing for Ong Pang Siew after the Court of Appeal reduced his murder conviction to culpable homicide due to diminished responsibility.

1.7 Decision Date

2. Parties and Outcomes

Party NameRoleTypeOutcomeOutcome TypeCounsels
Public ProsecutorProsecutionGovernment AgencySentence imposedNeutralAmarjit Singh
Ong Pang SiewDefendantIndividualImprisonmentLostSubhas Anandan, Sunil Sudheesan

3. Judges

Judge NameTitleDelivered Judgment
Tay Yong KwangJudgeYes

4. Counsels

Counsel NameOrganization
Amarjit SinghAttorney-General's Chambers
Subhas AnandanKhattar Wong
Sunil SudheesanKhattar Wong

4. Facts

  1. The accused was charged with the murder of his 15-year-old step-daughter.
  2. The accused admitted to killing his step-daughter but claimed diminished responsibility due to a major depressive episode.
  3. The Court of Appeal substituted the murder conviction with culpable homicide not amounting to murder.
  4. The accused had previous convictions for being drunk in a public place, criminal intimidation, and illegal punting.
  5. The prosecution argued for life imprisonment, citing the grave and inhumane nature of the crime.
  6. The defense presented psychiatric reports indicating the accused's improved mental state and low risk of re-offending.
  7. The Court of Appeal found that the accused went to the flat without the intention of killing the step-daughter.

5. Formal Citations

  1. Public Prosecutor v Ong Pang Siew (No. 2), Criminal Case No 25 of 2008, [2011] SGHC 177

6. Timeline

DateEvent
Killing occurred and accused was arrested
Amendments were made to section 304(a) of the Penal Code
Criminal Case No 25 of 2008
PP v Ong Pang Siew [2009] 4 SLR(R) 474
Ong Pang Siew v PP [2011] 1 SLR 606
Dr Tommy Tan examined the accused in prison
Dr Tommy Tan spoke to Mdm Sally Ong
Dr Tommy Tan spoke to Mr Ong Pang In and Mr Ong Pang Chan
Dr Tommy Tan's report was dated
Dr Tan Soo Teng's letter was dated
Medical report on the ex-wife by Dr Angelina Chan
Decision Date

7. Legal Issues

  1. Appropriate Sentence for Culpable Homicide
    • Outcome: The court sentenced the accused to 10 years’ imprisonment, the maximum alternative imprisonment term provided by s 304(a) of the Penal Code.
    • Category: Substantive
  2. Diminished Responsibility
    • Outcome: The Court of Appeal found that the defence of diminished responsibility was made out, acquitted the accused of murder and substituted his conviction for murder to culpable homicide not amounting to murder.
    • Category: Substantive

8. Remedies Sought

  1. Imprisonment

9. Cause of Actions

  • Culpable Homicide

10. Practice Areas

  • Criminal Law
  • Criminal Litigation

11. Industries

  • No industries specified

12. Cited Cases

Case NameCourtAffirmedCitationJurisdictionSignificance
PP v Ong Pang SiewHigh CourtYes[2009] 4 SLR(R) 474SingaporeSets out the facts of the case in detail.
Ong Pang Siew v PPCourt of AppealYes[2011] 1 SLR 606SingaporeCourt of Appeal substituted the conviction for murder to culpable homicide not amounting to murder.
R v Rowland Jack Forster HodgsonN/AYes(1968) 52 Cr App 113England and WalesReferred to for guidelines on the imposition of life imprisonment.
PP v BarokahHigh CourtYes[2009] SGHC 46SingaporeCited regarding the importance of remembering victims and their families.
PP v Chee Cheong Hin ConstanceN/AYes[2006] 2 SLR(R) 707SingaporeCited as a case where life imprisonment was not deemed appropriate for an accused suffering from abnormality of mind.
PP v Aguilar Guen GarlejoN/AYes[2006] 3 SLR(R) 247SingaporeCited as a case where life imprisonment was not deemed appropriate for an accused suffering from abnormality of mind.
PP v Han John HanN/AYes[2007] 1 SLR(R) 1180SingaporeCited as a case where life imprisonment was not deemed appropriate for an accused suffering from abnormality of mind.
PP v Aniza bte EssaN/AYes[2008] 3 SLR(R) 832SingaporeCited as a case where life imprisonment was not deemed appropriate for an accused suffering from abnormality of mind.

13. Applicable Rules

Rule Name
No applicable rules

14. Applicable Statutes

Statute NameJurisdiction
Penal Code (Cap 224, 1985 Rev Ed) section 300 Exception 7Singapore
Penal Code section 304(a)Singapore
Penal Code section 506Singapore
Penal Code section 427Singapore

15. Key Terms and Keywords

15.1 Key Terms

  • Culpable Homicide
  • Diminished Responsibility
  • Major Depressive Episode
  • Sentencing
  • Psychiatric Reports
  • Mental State
  • Retribution

15.2 Keywords

  • culpable homicide
  • diminished responsibility
  • sentencing
  • psychiatric assessment
  • mental disorder
  • imprisonment

16. Subjects

  • Criminal Law
  • Sentencing
  • Mental Health Law

17. Areas of Law

  • Criminal Law
  • Sentencing
  • Culpable Homicide
  • Diminished Responsibility