On 19 March 2014, at her bungalow in Bukit Timah, 69-year-old Nancy Gan Wan Geok (颜婉玉 Yán Wǎnyù) was murdered by her newly hired maid, an 18-year-old Indonesian named Dewi Sukowati, who slammed Gan's head against a wall before throwing her body into a swimming pool of Gan's house, resulting in Gan's death from a brain injury and drowning. Gan, a socialite, had allegedly abused Dewi and it resulted in Dewi killing her in retaliation. Dewi was arrested and charged with murder, but after she was assessed to be suffering from diminished responsibility at the time of the offence, Dewi's murder charge was reduced to manslaughter before her trial started. Dewi pleaded guilty to the reduced charge and was sentenced to 18 years' imprisonment on 31 May 2016.

Murder On 19 March 2014, inside her bungalow at Victoria Park, Bukit Timah, an elderly woman was found dead in her swimming pool and with head injuries. On that same day itself, the woman's newly hired maid, an 18-year-old Indonesian citizen, was arrested on suspicion for murdering her employer. The maid was reportedly hired less than a week prior to the murder of Gan.

The victim was later identified as 69-year-old socialite Nancy Gan Wan Geok, a Hong Kong-born Singaporean who was the ex-wife of a Hong Kong politician. Gan herself was a porcelain painter and pianist who was known for her engagement in philanthropic activities and contributing her artworks to charity. At the time of her death, Gan left behind five sisters, two brothers and two children (aged in their 30s) from one of Gan's previous marriages. Gan's daughter Sharon Lim was living in London, where she worked as a doctor, while Gan's son Victor Lim lived together with her in Singapore. Gan's son was on a business trip in Seoul, South Korea at the time of his mother's murder, and he rushed back to Singapore after receiving news of his mother's death.

Forensic pathologist Dr Wee Keng Poh later conducted an autopsy on the victim. He found that Gan sustained a fractured skull that led to head injuries which were sufficient in the ordinary course of nature to cause death. Dr Wee also stated that the drowning itself had also primarily contributed to her death, and hence concluded the cause of death to be both drowning and the fatal head injuries Gan sustained. Although the crime scene itself was clean, forensic experts were able to use forensic technology to reveal the bloodstains that had been reportedly washed by the maid, including a trail of blood that started from the bedroom of the victim to the swimming pool, suggesting that Gan was dragged to the pool after she was allegedly killed in her bedroom.

Three days later, a funeral was held at Mount Vernon Sanctuary funeral home on 22 March 2014, with Gan's friends and family members attending the funeral itself before her cremation a day later. Gan's family were reportedly still in shock over what happened, and Gan's second sister Helen Gan remembered the victim as "a generous person, very giving, very affectionate". None of the political figures or dignitaries from Gan's social circle were invited out of consideration to keep the wake private. Gan's second ex-husband Hilton Cheong-Leen, a former Hong Kong politician, was also present at the funeral. Gan's stepdaughter Flora Cheong-Leen told a newspaper that although she was not close to her stepmother, she was saddened to learn about Gan's murder. Gan's family members, however, stated that they had never met her maid, who was charged with her murder two days before the funeral.

The murder of Nancy Gan was the second case of a maid killing her employer or the employer's family member(s) during that month itself. Earlier this month, a 24-year-old Myanmar maid Than Than Win was arrested for murdering her employer's 87-year-old mother-in-law Yong Wan Lan. Than was later found guilty of manslaughter and jailed for 13 years in July 2015.

Investigations On 20 March 2014, a day after Nancy Gan was murdered, her new maid, identified as 18-year-old Dewi Sukowati, was officially charged with murder in the Subordinate Courts of Singapore. Under the law, offenders convicted of murder could face the death penalty. Mohamed Muzammil bin Mohamed, a veteran lawyer who formerly represented several maids charged with murder (including Sundarti Supriyanto who killed her abusive employer), was engaged by the Indonesian embassy to defend Dewi during her upcoming murder trial. Dewi was also ordered to undergo psychiatric remand at Changi Women's Prison for three weeks. Her parents were also summoned to provide assistance in investigations.

During the course of investigations however, it was discovered that Dewi was possibly not 23 years old at the time of the murder, and her lawyer also requested to the court to amend her age. It was first reported by the Indonesian media that Dewi's registered date of birth on her passport, which was 5 August 1990, was likely to be false, and for this issue, Dewi's father was summoned to Singapore to assist in investigations regarding this matter and the Indonesian authorities also conducted a probe on the individuals who took part in the falsification of Dewi's age. Eventually, the authorities verified that Dewi's actual age was 18 years and seven months old at the time of the offence and her actual date of birth was 5 August 1995. Given her true age was 18 at the time of the murder, Dewi could still be sentenced to death if she was found guilty of murder, because the laws of Singapore allowed the courts to impose a death sentence for offenders aged 18 and above at the time of the offence, should such convicts be found guilty of whichever crime warrants capital punishment. On the other hand, criminals aged below 18 at the time of the offence would be spared the gallows and instead sentenced to life imprisonment if they were found guilty of murder.

On 21 April 2015, Dewi's murder charge was reduced to a lesser offence of culpable homicide not amounting to murder, also known as manslaughter in Singapore's legal terms, and the reduction of the charge allowed Dewi to no longer face the death penalty for murdering Gan. The possible punishment Dewi would face for manslaughter is either life imprisonment or up to 20 years' jail.

According to Dr Kenneth Koh, a psychiatrist from the Institute of Mental Health, he found that Dewi was suffering from "acute stress reaction", a psychological disorder resulting from exposure to trauma. According to Dr Koh, Dewi's condition, coupled by social factors such as her young age and her past experiences of abuse by her father, had significantly impaired her judgment, impulse control and mental responsibility at the time of the murder. Therefore, Dewi's murder charge was reduced on the grounds of diminished responsibility.

Background Nancy Gan Wan Geok Nancy Gan Wan Geok was born in Hong Kong on 27 February 1945, and she spent her childhood growing up in Singapore. Gan was the oldest of eight children, and her father was a commander. Gan studied overseas at one point during her schooling years, and she graduated from Trinity College London, and became a classical pianist. Gan also became a porcelain painter after she first picked up the craft in 1974. Gan had held exhibitions of her porcelain paintings in Hong Kong from 1988 to 1992, and she also held such events in other countries like Singapore, the United States and Australia.

When she reached adulthood, Gan was married to a Malaysian surgeon (surnamed Lim) and had two children (one son and one daughter), but shortly after the birth of their son, Gan's first husband died. Afterwards, Gan married a second time to Hong Kong politician Hilton Cheong-Leen in 1988, and had four stepchildren from Cheong-Leen's first marriage (including Flora Cheong-Leen). Gan and Cheong-Leen later divorced on an unknown date.

After her divorce, Gan returned to Singapore and settled there up until her death. Gan would continue to paint landscapes, flora and fauna on porcelain and regularly donate her artworks to charity, and also devoted much of her time to philanthropic activities in Singapore and the Far East. Gan herself also participated in fund-raising activities for the Singapore Association of the Visually Handicapped, Singapore Cancer Society and the Bone Marrow Donor Programme. Gan was described by her kin and friends to be gregarious, neat in appearance and talented, and she was known for her kind-hearted and well-mannered character.

Dewi Sukowati

Born on 5 August 1995, Dewi Sukowati was the eldest of three daughters in her family, who all came from Pati, a village in Central Java, Indonesia. She reportedly had a bad relationship with her father, who constantly abused her. Her sisters were aged 17 and four respectively at the time she was tried for killing Nancy Gan.

Dewi studied up to her third year in secondary school, and due to her family's poverty, Dewi was sent to work as a maid. However, she did not go through the normal procedure of having a three-month mandatory training as a maid. Instead, Dewi underwent a one-day crash course of training as a maid and was therefore sent off to Singapore for employment despite being ill-equipped. Not only that, although Dewi was 18 years old and had not attained the legal minimum age of 23 to work as a maid in Singapore, her date of birth was changed to 5 August 1990 to make her five years older than her real age, enabling her to bypass the legal requirements. She was hired by Nancy Gan and her first day of work at Gan's household was on 13 March 2014. However, for the first six days of her work, Dewi was allegedly receiving verbal and physical abuse from Gan, due to Dewi not performing up to her expectations as a maid. On the first day, Dewi was reportedly poked on the head by Gan, who also used a broomstick to hit her on her head.

Account of the murder The following was the official version of the murder of Nancy Gan, based on the confession of Dewi Sukowati and other evidence gathered by the authorities.

On 19 March 2014, the sixth day of Dewi's job at Gan's house, Dewi woke up at 5.30am to start her work for the day itself. Two hours later, Dewi was tasked by Gan to bring her a glass of water. However, after doing so, Gan splashed the water on Dewi's face and threw the tray onto the floor, as the maid was using the wrong type of tray for the glass of water, and that was not the first time she made the same mistake. Dewi tried picking it up but Gan grabbed it first and hit Dewi on the head, and after scolding Dewi, Gan threatened that she would cut down Dewi's monthly salary to S$200 a month.

According to Dewi, after she endured six days of alleged abuse and upon hearing the threat of getting her pay cut, it became the proverbial straw that broke the camel's back and Dewi finally lost her cool. Dewi grabbed hold of Gan's hair and hands and swung her employer's head against the wall. Dewi stated that she originally meant to slam Gan's face against the wall, but instead, Gan was hit on the back of her head against the wall because she resisted in the course of the scuffle. This led to fractures of her skull and Gan fell unconscious after getting hit. Dewi was greatly panicked at the sight of massive bleeding from Gan's wound and it took her ten minutes before Dewi checked to see if Gan had died. After feeling a weak heartbeat from Gan's chest, Dewi decided to place Gan's body in the swimming pool of the house in order to drown her and make it look like Gan committed suicide, and she did so out of fear that Gan might wake up and call the police. During the process of dragging Gan's body to the pool, Dewi was reminded of the resentment and anger she harboured towards Gan for the alleged mistreatment and hence she slammed Gan's head against the edge of a ceramic-tiled staircase step. After placing the body in the pool, Dewi also threw her employer's sandals into the pool to further create the false impression of a suicide.