This is due to inadequate prevention measures and non-existent infrastructure. In addition to building in flood-prone areas without adequate measures. 

 To build a 5,700-space underground parking lot in an area at risk of flooding. I think this is rather negligent.

It has not yet been possible to gain access, nor is it known how many people may have drowned down there. One of many.
 https://image.nostr.build/9fe1c0f6f9481d42d9439583f421176286a3dfb993964bba603a63335d6b3ed8.jpg