S'porean woman, 63, sprays insecticide at neighbour & children, splashes bleach at door after bicycle parking dispute

In a dispute with her neighbour, a Singaporean woman repeatedly poured bleach outside her neighbour's flat.

She also sprayed insecticide on her neighbour and family, which led to their diagnosis of mild insecticide exposure.

According to CNA, 62-year-old Ng Seoh Hui pleaded guilty to eight charges, which include committing rash conduct with a harmful substance to cause hurt or injury to another person, voluntarily causing hurt using a harmful substance, and using insulting words towards public servants.

13 other charges were taken into consideration.

Ng was sentenced to 14 weeks and 19 days in jail and was also ordered to pay S$342 in compensation for the victim's medical expenses, CNA stated.

Bicycle parking

According to court documents, the dispute began in May 2022.

The victim had bought two bicycles and parked them at the lift lobby, where other neighbours had parked theirs. She also had plants in the lift lobby.

This led to complaints from their town council.

In May 2022, the victim discovered someone had poured bleach on her plants, leading her to confront Ng's daughter.

This then led to more clashes over the years between Ng and the victim, including Ng swearing at them and pouring an unknown liquid onto their door camera.

In July 2025, after another incident following the parking of the bicycle outside the unit.

According to Shin Min, this angered Ng, who lived directly across, and she poured curry near a rubbish chute area, causing an ant infestation outside the victim's flat.

The victim then moved her bicycle to the lift lobby, where other bicycles were parked, but Ng complained to the town council and requested that it be removed.

According to CNA, when the town council followed up by pasting a removal notice on the bicycle, the victim called the town council and pointed out that the bicycle did not obstruct access to the lift or the staircase, leading to the notice being taken down.

Ng thought this was the neighbour's doing

On Jul. 17, 2025, the victim smelled bleach from inside her flat and discovered that the corridor was wet.

Checks from the CCTV footage showed Ng had poured the bleach.

She continued to do so over the next few days.

On Aug. 1, the victim reported the incidents to the police, and three police officers spoke with Ng.

According to CNA, Ng admitted her actions and said, "Since the government didn't do anything, so I take matters into my own hands."

She added that she would continue to splash bleach until the victim removed her bicycles.

During her arrest, Ng kicked one of the officers twice and repeatedly shouted "all police are idiots" and "you all idiots".

On bail

While out on bail, Ng continued her dispute with her neighbour, Shin Min reported.

On Feb. 24, 2026, Ng sprayed insecticide at the victim and her nine-year-old daughter, who were returning home.

Two days later, Ng sprayed insecticide at them again. When the victim shouted at Ng to stop, Ng came out of her house and continued spraying.

The victim then threw her daughter's file containing notes at Ng, and returned to her flat to wait till Ng left to retrieve her daughter's notes.

When the victim's husband attempted to retrieve the notes, Ng came out of her house with two cans of insecticide.

This prompted the husband to call the police.

An ambulance was also activated, and the victim and her daughter were diagnosed with mild insecticide exposure.

Ng was then arrested again on Mar. 1, 2026.

Felt remorse

According to CNA, while the deputy public prosecutor sought a sentence of at least two months and eight weeks in jail, the public prosecutor acknowledged that Ng suffered from major depressive disorder.

Ng's defence lawyer added that Ng was remorseful and pleaded guilty quickly.

During sentencing, the district judge noted that despite Ng's condition, she had caused alarm to the victim and her daughter, and continued to offend while out on bail.

The judge added that there are solutions to resolve disputes, but "taking matters into your hands is not one of such solutions."