Screaming pupils from a nearby school, skateboarders and teenagers often use the badminton court near the school as their playground.
The new paper understands that residents of nearby block 611 have complained to Woodlands Ring primary school about the noise.
Residents said they have seen its discipline master making occasional patrols around the area to ask noisy pupils to lower their volume.
Of late, litter has been thrown from the block in the direction of the badminton court, and tnp understands that the pupils and teenagers are often the target of the litter.
Residents said the litter included soiled diapers, cigarette butts and dirty water, but they believed tuesday was the first time that someone has got hurt.
The incident has made some of them more wary when walking below the block.
Madam Chan, a 50-yearold resident of block 611 for 10 years, worries that she and her mother-in-law, who is 70, might become victims of killer litter.
The housewife said: "it might get noisy because of the kids but nobody should throw rocks like that.
"This is so dangerous. What if my mother-in-law was passing by and a rock hits her? it is so irresponsible.
"Thankfully, there is a sheltered walkway all the way from the bus stop to the block."
Another resident, taxi driver Akbar Ali, 48, said killer litter is a common sight at the bottom of the block.
He recalled that a bicycle was thrown down a few months ago.
"The things people throw down can get very scary, so all we can do is try to avoid walking below the block," he said.
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