CAIRO - Seven people were killed when a residential building collapsed on Wednesday in the historic Islamic quarter of Cairo, Egypt's official Middle East News Agency (MENA) reported. "Rescue workers pulled seven corpses from the rubble in the Darb el-Ahmar area. An eighth person was rescued, suffering from moderate to severe fractures," MENA said. "Prosecutors were informed so an investigation could be carried out immediately," it added. Building collapses are common in Egypt because of lax building standards and poor maintenance. At least six people were killed earlier this month when a four-storey residential building collapsed in Cairo's Shubra neighbourhood.