The Andrew Road Triple Murders

The victims and the home invasion

On July 23, 1983, 61-year-old retired businessman Robert Tay Bak Hong was at his bungalow on Andrew Road with his wife Annie Tay, their young daughter Dawn, Dawn's tutor Tang So Ha and the family's domestic worker Jovita Virador. Two 19-year-olds, Singaporean national serviceman Sek Kim Wah and Malaysian Nyu Kok Meng, entered the home carrying a knife and a rifle.

The pair restrained the people inside and demanded money and valuables. Contemporary court reporting later showed that Sek had previously worked at the Tay household and knew Robert Tay. During the robbery, Sek took Robert Tay out to withdraw additional cash before returning to the bungalow.

Three murders and two survivors

Robert Tay, Annie Tay and Jovita Virador were killed inside the house. The Straits Times' later reconstruction, produced from its archives in collaboration with the Singapore Police Force, identifies Sek as the person who killed all three.

Nyu's role was materially different. When he realised Sek intended to eliminate the remaining witnesses, Nyu protected Dawn and her tutor and allowed them to escape. This distinction matters to the legal record: Nyu participated in the armed robbery, but he was not ultimately convicted of any of the three murders.

Investigation and arrests

The escape of Dawn and Tang gave police crucial witnesses. Nyu also left identifying material behind at the house. Investigators connected the rifle to a weapon stolen from the Singapore Armed Forces, and attention turned to Sek, who was arrested on July 29, 1983.

Nyu had left for Malaysia but later surrendered. He was returned to Singapore. During the wider investigation, police also linked Sek to an earlier, separate double murder involving Lim Khee Sin and Ong Ah Hong. Those deaths are not counted as separate victims of the Andrew Road case on this page.

Nyu Kok Meng's separate outcome

Although both men were initially charged in connection with the killings, prosecutors withdrew the murder charges against Nyu. He pleaded guilty to armed robbery with a firearm under the Arms Offences Act. In July 1985 he was sentenced to life imprisonment and six strokes of the cane.

This archive therefore does not describe Nyu as a convicted murderer. His participation in the robbery is established by his conviction, while the homicide responsibility adjudicated at trial rested with Sek.

Sek Kim Wah's murder trial

Sek stood trial before two High Court judges in 1985. He admitted killing the three Andrew Road victims but relied on diminished responsibility, supported by psychiatric evidence offered by the defence. The prosecution disputed that he suffered from a qualifying mental abnormality.

On August 14, 1985, the court rejected the diminished-responsibility defence and convicted Sek of the three murders. The same proceedings also addressed the two earlier killings to which he had confessed, but this case file remains focused on the Andrew Road victims rather than artificially splitting or merging unrelated incidents.

Appeal and execution

Sek appealed. The Court of Appeal rejected the challenge to the trial judges' findings, leaving the murder convictions and death sentences intact. He was executed at Changi Prison on December 9, 1988.

The legal outcome is therefore final: Sek Kim Wah was convicted of murdering Robert Tay, Annie Tay and Jovita Virador. Nyu Kok Meng was convicted of armed robbery, not murder.

Why the case remains significant

The Andrew Road murders became one of Singapore's most widely remembered criminal cases of the 1980s because of the home invasion, the survival of two hostages and the sharp legal distinction between the two perpetrators' roles. It also became part of the later police investigation into Sek's earlier killings.

For Crime by Region, the essential editorial point is precision. The case should not be retold as though both robbers were convicted killers, and the two earlier murders linked to Sek should not be repackaged as additional Andrew Road case files merely to increase a country count.