CNA gives better info
"Bangkok governor Chadchart Sittipunt told Thai media that the sinkhole was caused by a leak in a tunnel at a construction site for a new MRT station.
Suriyachai Rawiwan, director of Bangkok's disaster prevention department, told AFP at the scene that the collapse was likely linked to recent heavy rain and a leaky pipe."
https://www.channelnewsasia.com/asia/thailand-bangkok-sinkhole-injuries-vajira-hospital-5365671
Going there soon. Need to avoid construction sites.
"Bangkok governor Chadchart Sittipunt told Thai media that the sinkhole was caused by a leak in a tunnel at a construction site for a new MRT station.
Suriyachai Rawiwan, director of Bangkok's disaster prevention department, told AFP at the scene that the collapse was likely linked to recent heavy rain and a leaky pipe."
https://www.channelnewsasia.com/asia/thailand-bangkok-sinkhole-injuries-vajira-hospital-5365671
Going there soon. Need to avoid construction sites.