What happened during the gas explosion at the shopping mall in Taichung, Taiwan, and what was the response?

A devastating gas explosion occurred at a shopping mall in Taichung, Taiwan, killing four people and injuring 26 others. The blast happened on the 12th floor in the food court area, blowing out multiple floors and sending debris onto the street below. Panicked shoppers fled as emergency responders conducted floor-by-floor search and rescue operations. The explosion created chaos as eyewitnesses described hearing loud blasts and vibrations that initially made them think it was an earthquake. Authorities are investigating the cause, noting that part of the building was under renovation at the time, though it's unclear if this was connected to the incident.