Pasir Ris double deaths: Man who killed daughter had history of mental problems

SINGAPORE - A father of three who killed his autistic daughter before jumping to his death in August last year had a history of depression, bipolar mood disorder and delirium.

Mr Tang Soh Ha, 69, who was Ms Tang Hui Yee's primary caregiver, was also suffering from insomnia.

In an inquiry into their deaths on Friday (Sept 7), State Coroner Kamala Ponnampalam said that Mr Tang was having suicidal thoughts shortly before the tragedy.

She added: "When he was unable to sleep, Mr Tang would lie awake worrying about Ms Tang's future.

"His declining health caused him grave concern about Ms Tang's care arrangements."

State Coroner Kamala found that Mr Tang had fatally assaulted his 27-year-old daughter with a knife before taking his own life by jumping from Block 560 Pasir Ris Street 51 on Aug 20 last year.

She said that Ms Tang was a student at the Movement for the Intellectually Disabled of Singapore school and was known to become agitated when her demands were not met.

Ms Tang also had frequent episodes of aggression during which she would hit and push others.

Man, 70, and daughter, 27, found dead at Pasir Ris block

  • A 70-year-old man and his 27-year-old daughter were found dead at Block 560, Pasir Ris Street 51.
  • Neighbours say the man, Mr Tang Soh Ha, was a loving father to daughter Tang Hui Yee, who has special needs.
  • Mr Tang was found dead at the foot of Block 560, Pasir Ris Street 51, where he and Ms Tang, 27, lived.
  • Police found the woman dead in their second floor flat, with stab wounds on her body, including the neck.
  • The police were alerted to a case of unnatural death at 1.30pm
  • They found the man lying motionless at the foot of the block.
  • Upon further investigation, the woman was found in the same state in a residential unit on the second floor.
  • According to Shin Min Daily News, the woman, who was the man's youngest daughter, had multiple slash wounds on her body, including one on her neck.
  • She had special needs and was a student at the Movement for the Intellectually Disabled of Singapore, reported Lianhe Wanbao. Her father appeared to be her main caregiver.
  • The New Paper reported that a woman in her 70s, believed to be the man's wife, was seen wailing at the scene.

Her father, on the other hand, had been treated for depression at a Thai public hospital in 2005.

He was first seen at Singapore's Institute of Mental Health (IMH) three years later due to acute behavioural changes following the failure of his business in Bangkok.

He was treated with mood stabiliser medication and, according to his family members, he remained symptom-free from any depressive or manic conditions.

On Aug 5 last year, Mr Tang went to IMH following a referral by a polyclinic for having suicidal thoughts.

State Coroner Kamala said Mr Tang's case manager from IMH contacted him 11 days later.

She added: "He said that his mood was low in the morning and he was having worries such as the future of his intellectually disabled daughter. He also reported having suicidal thoughts again."

Mr Tang was advised to go the IMH emergency room for an early review if he felt suicidal or unable to cope with his symptoms.

However, one of his neighbours found him lying motionless at the foot of their block at around 1.20pm on Aug 20 last year and alerted the police.

He was pronounced dead about 10 minutes later.

Closed circuit television footage taken from a lift at the block showed him going up to the eighth storey alone at 1.14pm.

His family members later accompanied a police officer to their home on the second storey and spotted Ms Tang lying face down in the kitchen with deep wounds at the back of her neck.

She was pronounced dead at 2.22pm.

Their family members were not in court on Friday.

This article was first published in The Straits Times. Permission required for reproduction.


  • Samaritans of Singapore (SOS): 1800-2214444
  • Singapore Association for Mental Health: 1800-2837019
  • Sage Counselling Centre: 1800-5555555
  • Care Corner Mandarin Counselling: 1800-3535800