Monkeys have been sighted in Yishun.
One resident complained that a monkey had entered his flat on Friday.
On Monday, a monkey was spotted climbing up a block of flats, peering into kitchens and sticking its head through window grilles as it made its way to the fifth storey.
A Sembawang-Nee Soon Town Council spokesman said it has enlisted the help of the Agri-Food & Veterinary Authority to place a cage trap at the block.
The spokesman also said residents are advised not to feed the monkeys as this may encourage them to stay or agitate them.