SINGAPORE, June 30 -- For years, Abdul Rani Md Ariffin cared for his younger brother through depression, chronic illness and unemployment after their mother's death.

Today, the 59-year-old Singaporean was sentenced to eight years in prison for killing the very brother he had spent years looking after, in a case that laid bare the devastating toll caregiver stress can take on families.

According to CNA, Abdul Rani pleaded guilty to culpable homicide not amounting to murder after prosecutors reduced an original murder charge. Psychiatrists found he was suffering from an adjustment disorder at the time of the offence, giving rise to diminished responsibility under Singapore law.

The court heard that Abdul Rani became the family's primary ...