What happened during the gas explosion incident at the shopping mall in Taichung, Taiwan, and what is the current status of the investigation?

A devastating gas explosion occurred on the 12th floor food court of a shopping mall in Taichung, western Taiwan, resulting in at least four deaths and 26 injuries. Eyewitnesses described hearing a loud explosion that resembled an earthquake, and surveillance footage captured shoppers frantically trying to escape the scene. The city's mayor has prioritized search and rescue operations while authorities continue investigating the cause. Part of the building was undergoing renovations at the time, though it remains unclear whether this work was connected to the explosion. The official cause is still under investigation.