Man convicted of stalking former co-worker blasted by judge on appeal for asking scandalous questions

A man who stalked a former coworker for five years continued harassing her even during his trial, where he represented himself and asked her irrelevant questions over seven days of cross-examination.

- Selina Lum

Lucas Seng Yong Yi, 39, also subjected other prosecution witnesses to similar antics by asking them scandalous questions during the trial, which spanned over 70 days from April 2021 to September 2024.

Seng was sentenced to 18 months' jail by a district judge in late 2024 after he was convicted of three charges of stalking under the Protection from Harassment Act.

Justice Vincent Hoong blasted Seng's behaviour in court in a written decision on Aug 8, 2025, after dismissing the offender's appeal against his conviction and sentence on July 30.

The High Court judge said Seng's conduct at the trial was "outrageous".

Justice Hoong agreed with the lower court that Seng's deplorable conduct during the trial was an aggravating factor in the sentencing.

He said Seng had engaged in victim-blaming, such as contending that the victim had brought some of the acts of harassment on herself because she uploaded her resume on LinkedIn.

Seng also posed scandalous and irrelevant questions at length to the prosecution's witnesses.

For instance, he alleged that a male witness was homosexual and was lying in court about being the woman's boyfriend.