Osama bin Laden's closest relatives are living in a secret compound in Iran, members of the family said. They include a wife and children who disappeared from his Afghan camp at the time of the 9/11 attacks on the United States. There has been uncertainty about the family's whereabouts for the past eight years, with reports that some of the children had been killed in bombings. However, relatives said that they found out last month that the group, including one of Osama's wives, six of his children and 11 of his grandchildren, had been kept in a high-security compound outside Tehran. Members of the bin Laden family are now appealing for the group to be allowed to leave Iran and described them as the forgotten victims of 9/11". Omar Ossama bin Laden, 29, [Osama bin Laden's] fourth-eldest son, said he had no idea that his brothers and sisters were still alive until they called him in November. They told him how they had fled Afghanistan just before the 9/11 attacks and walked to the Iranian border. They were taken to a walled compound outside Tehran where guards said they were not allowed to leave "for their own safety".