Police are accelerating their investigation into the cause of the ceiling collapse at a commercial building in Daegu on October 10th, which injured dozens of people. The collapse involved the entire steel frame supporting the finished ceiling. Authorities are working to determine the factors that led to the structural failure and prevent similar incidents. The investigation focuses on the materials used and construction practices employed at the building in Daegu. Initial reports suggest a complete failure of the steel ceiling frame with finishing materials. The incident prompted immediate emergency response and raised concerns about building safety standards in the area. Investigators are meticulously examining the site to understand the sequence of events and identify any potential negligence.