A building collapse one week ago in central China killed 53 people as the search of the large pile of debris ended after rescuers found 10 survivors. The residential and commercial building in the city of Changsha suddenly collapsed the afternoon of 29 April. At least nine people have been arrested on suspicion of ignoring building codes or committing other violations. The arrested include the building owner, three people in charge of design and construction and five others who allegedly gave a false safety assessment for a guest house on the building's fourth to sixth floors.Poor adherence to safety standards, including the illegal addition of extra floors and failure to use reinforcing iron bars, is often blamed for such disasters. Decaying infrastructure such as gas pipes has also led to explosions and collapses.