Explainer: What caused the sinkholes in Kuala Lumpur and can the same thing happen in Singapore?
A tourist fell into a sinkhole in Kuala Lumpur on Aug 23
Rescue operations have been tough due to poor visibility and strong undercurrents, likely caused by heavy rainfall
Experts suggested that soil erosion, heavy rain and potential pipe leaks may have weakened the ground, contributing to the collapse
Kuala Lumpur's limestone bedrock, prone to dissolution, is under scrutiny
Natural sinkholes are unlikely in Singapore, but sinkholes caused by man-made works are still a possible occurrence here, experts said