SINGAPORE – After a few failed attempts to salvage his relationship with his former girlfriend, an intoxicated man armed himself with a knife and waited for her near her home.

When he spotted the woman, Zheng Xianfeng confronted her in anger and repeatedly stabbed her in the chest and abdomen.

He did not stop even after a passer-by riding a personal mobility device rammed him.

The victim, Ms Tham Mee Yoke, 34, suffered at least 29 stab and slash wounds as well as three rib fractures. She died from her injuries.

On Wednesday, Zheng, 37, was sentenced to 12 years’ jail by the High Court after he pleaded guilty to a charge of culpable homicide for fatally stabbing Ms Tham just before midnight on Feb 16, 2021, near the void deck of Block 308 Jurong East Street 32.

The Chinese national was originally charged with murder, but the charge was reduced as he was assessed to be suffering from major depressive disorder, which diminished his responsibility for his actions.

Four other charges were taken into consideration: One for hurting Ms Tham with a penknife three months prior to the killing, two for hurting his brother, and one for causing annoyance when drunk.

The court heard that Zheng met Ms Tham, a Malaysian, in December 2018 as they rented separate rooms in the same unit and entered into a relationship with her.

Zheng, who was married at the time, was also in a relationship with another woman. Ms Tham was separated from her husband and had four children living in Malaysia.

Zheng eventually divorced his wife and ended the other relationship. He shared a room with Ms Tham from September 2019 to November 2020.

On Nov 17, 2020, they quarrelled at an open-air carpark in Jurong East Avenue 1 as Ms Tham wanted to end the relationship.

During the argument, Zheng stabbed himself in the thigh with a penknife, before pinning her on the ground and cutting her. Zheng was arrested and put on bail after he was charged over the assault.

He then made several attempts to patch up the relationship.