The 14th and final suspect, Sagar Suppiah Retnam, who was the headman of Ang Soon Tong, was found guilty of murdering Sivapragasam and sentenced to death on 31 May 1994.

On the night of 14 December 1990, at Marsiling Drive, a group of armed men from the infamous gang Ang Soon Tong, which was active at Taman Jurong, attacked several people at different locations around a void deck of one of the HDB blocks in that area.

It was revealed later through police investigations that the purpose of the Ang Soon Tong's attack was to wage a war with their rival gang Gi Leng Hor, who were active in that same area of Marsiling.

[1] One of these victims, a 20-year-old Malaysian and machine operator named Sivapragasam Subramaniam, who came from Kuala Kangsar, Perak, died as a result of the head injuries he sustained.

[2] Another four people were injured and rushed to hospital;[3] two of them - 18-year-old Mageswaran Ganapathy and 20-year-old Gabriel Shankar - were in critical condition while another two - 30-year-old Prakash Periasamy (a friend of Sivapragasam) and 18-year-old Mat Iqbal - were discharged in a few days.

[4] Another source revealed there was a sixth victim, Abu Bakar Mohd Ali (aged 18), who suffered from minor injuries due to the attack.

Sagar, who could speak fluent Hokkien but little English, was born as the fourth child and had three sisters and two brothers, and his mother was an employee of a mental hospital.

[12] One of these 14 suspects, a 23-year-old Malaysian named Soosay Sinnappen, happened to be in custody since January 1991 after his arrest for the unrelated case of a transvestite's murder in Bugis on 27 October 1990.

[25] Subsequently, Soosay successfully appealed to overturn his murder conviction, and his sentence was reduced to nine years' jail for a lesser offence of manslaughter on 10 August 1993.

On 9 March 1994, Sagar Suppiah Retnam stood trial at the High Court for one count of murdering Sivapragasam Subramaniam four years prior.

Ramesha Pillai represented Sagar as his defence counsel, and the prosecution was led by Lau Wing Yum of the Attorney-General's Chambers (AGC).

Two other people were also executed on the same date as Sagar: one of them was Goh Soon Huat, a 43-year-old jobless Singaporean caught trafficking 69.34g of heroin on 4 April 1994 and sentenced to death on 25 October 1994; the other was 30-year-old Anbuarsu Joseph, a former gang leader who was sentenced to death on 19 August 1994 for murdering 34-year-old operation assistant Thampusamy Murugian Gunasekaran back on 25 October 1993.