Mentally unsound S'porean man, 90, who killed wife gets notional 5-year jail term
90-year-old man sentenced to notional 5-year jail term for killing wife in Bukit Panjang, Singapore. He was found unfit to plead due to dementia and mental condition.
Intelligence analysis by Qwen 2.5 (3B)

A 90-year-old Singaporean man was sentenced to a notional 5-year jail term for killing his 74-year-old wife in 2024. He was found unfit to plead due to dementia and mental condition.
A 90-year-old man who had dementia killed his wife in their flat. The court found him unfit to plead and sentenced him to a notional 5-year jail term because he was dangerous.
Analysis
Background on the Case
Ridawi Morsudin, a 90-year-old man, was found guilty of culpable homicide not amounting to murder for attacking and killing his 74-year-old wife in their Bukit Panjang flat in 2024. He was diagnosed with mixed dementia and had been losing the ability to recognize his family members. The main door to the flat was locked, and the code to the lock was known only to his family members and a healthcare assistant. The window pane and window grilles were closed and intact when the police arrived. No one else could have entered the flat during the six-hour window when the couple was alone.
Legal Proceedings
The High Court found Ridawi unfit to plead or stand trial due to his unsound mind and dementia. The court considered the severity of Ridawi's brain condition and his low risk of reoffending due to the extensive care he needed for daily living. The prosecution had previously called for a notional imprisonment period of five years for Ridawi, while his lawyer argued for two to three years' jail. The judge could not agree with the lawyer's argument, as there was still a need for an element of protection due to Ridawi's dangerous state.
New Regime
The court must determine if the accused is indeed incapable of making his defence. If so, the court must report the case to the Minister of Law and specify the notional imprisonment period that the accused would have been required to undergo, if he was convicted of the offence. An appropriate order would then be taken by the minister.
Future Implications
This case is believed to be the first of its kind under the new regime that came into effect in February 2025. The court must determine if the accused is indeed incapable of making his defence and specify the notional imprisonment period if he was convicted of the offence.
Key points
- 90-year-old man sentenced to notional 5-year jail term for killing wife
- Man found unfit to plead due to dementia and mental condition
- Case is believed to be the first of its kind under new legal regime
- Court must determine if accused is incapable of making defence
- Notional imprisonment period must be specified if convicted
This case may lead to better support and care for elderly individuals with dementia to prevent such incidents in the future.
The case may highlight the challenges in enforcing laws for individuals with severe mental conditions, potentially leading to more lenient sentences in similar cases.
