A building collapse one week ago in central China killed 53 people, state media reported Friday 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 April 29. Aerial photos showed it pancaked to about the second story between other buildings about six stories tall. At least nine people have been arrested on suspicion of ignoring building codes or committing other violations.