Tsang, the daughter of a high-ranking Hong Kong police officer, was caught on 26 July 1992 at Changi Airport with 22 packets of diamorphine stuffed inside the inner lining of her two jackets.

Despite putting up a defence that she had committed the crime out of fear for her life, Tsang was nonetheless found guilty of capital drug trafficking after a six-day trial and sentenced to death on 19 October 1993.

[2] Elke Tsang Kai-mong was born in an affluent family living in British Hong Kong, and during adulthood, she resided in Hunghom.

[4] At the time of her arrest in Singapore, Tsang was jobless due to the bankruptcy of her company, and was engaged to a man whom she first met at a disco in 1985 and fell in love with back in Hong Kong.

At about 3:10pm, Customs officer Rosli Brahim observed Tsang at baggage conveyor belt number 18 in the arrival hall of Terminal 1 and became suspicious of her behaviour.

He then searched her possessions and sensed that a jacket at the bottom of her bag felt unusual to the touch, so her ordered Tsang to follow him to the customs office for a more thorough inspection.

[6] After removing two winter jackets from Tsang's luggage, the officers found both to be unusually heavy and seemed to have something behind hand-sewn stitches at the bottom edge of each.

[9] On 11 October 1993, a year and three months after her arrest, Elke Tsang was brought to trial at the High Court before Judicial Commissioner M P H Rubin.

According to Tsang, when she was safely on board the plane she decided to return to Hong Kong from Singapore instead of travelling onwards to Europe, as the US$3,000 she had received was equivalent to HK$21,000 and amounted to a substantial part of the original loan.

Tsang was reportedly emotionless at the verdict of death, and none of her family members were present in Singapore or the court to hear her trial outcome.

He noted that Tsang was emotional and despondent over her imminent fate, and the fact that her family moved away from their Yuen Long home and cut off contact with her after her arrest.

Tsang reportedly promised Ah Lam that she would return to Hong Kong after her release to marry him if by chance, her clemency plea was successful and her death sentence commuted to life imprisonment.

However, the application was rejected by then President of Singapore Ong Teng Cheong, who earlier declined to grant clemency in Tsang's case.

[31] Out of the four, 38-year-old Chan was later hanged on 10 March 1995 after exhausting his appeals,[32][33] while the rest - Tong, Lam and Poon - were all put to death on 21 April 1995, therefore becoming the last three from Hong Kong to be executed in Singapore.