To keep out a neighbour who was harassing them by throwing urine and used sanitary pads at their door, a family made a metre-high fence from scrap wood and erected it to block her access to their common corridor.

The fence had a latch on the inside so residents behind it could let themselves out, and was lined with cactus plants on the top so that the offending neighbour could not reach around to unlatch it.

But the Nee Soon Town Council has ordered the barrier removed from the sixth-floor corridor of Block 112, Yishun Ring Road, which the family has done. It is now propped up against the wall.

The Straits Times understands that a 63-year-old woman was arrested by police last Saturday for causing public nuisance and she is out on bail.

She is alleged to have harassed multiple residents since last December, including leaving balls of tissue paper and used sanitary pads outside their flats and splashing foul-smelling liquids on doors and along corridors.

Mr Edmund Lee, 28, whose father put up the barrier, said the family is not dismantling it in case their neighbour, who lives one floor below, returns.

The IT consultant was at the Ang Mo Kio Police Division to record a statement yesterday.

Affected residents told The Straits Times they still hear loud banging noises coming from the woman's flat, even in the wee hours of the morning.

Ms Hamidah, who lives on the floor below hers, tapped on the woman's door yesterday, but no one came to the door.

"They (the neighbours) have been complaining about this so many times, so I wanted to see her and talk to her," said Ms Hamidah, who goes by one name.

The 50-year-old roadshow organiser said while she has been disturbed by the noise since December, it has become louder since Monday.

No one approached the door when The Straits Times visited the woman's flat over the past three days.

Police are still investigating the case.