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Direct insertion at night

After the incident on the 23rd, several street subsidence incidents occurred in Kuala Lumpur. Due to the collapse of drainage ditch, a sidewalk in Kuala Lumpur collapsed on the 26th; In the early morning of the 28th, another subsidence occurred near the incident site on the 23rd. Fortunately, neither of the two incidents caused casualties. The head of the Malaysian Bureau of Mineral and Geological Sciences previously explained that about 30% of Kuala Lumpur areas are covered with limestone under the surface. Under the action of human and natural factors, such areas are prone to subsidence due to the rupture of underground pipelines or changes in groundwater flow.