How many people have fled their homes in Mogadishu?

The United Nations has warned of a looming catastrophe in Somalia where more than 200,000 people have fled their homes to escape the fighting in the capital Mogadishu. A UN official said that most people lacked food and water and were threatened by disease.
     The United Nations says at least 200,000 people have fled Mogadishu. Others say it’s much more. They are leaving scattered across southern and central Somalia in appalling conditions. The fighting has made it very difficult for aid agencies to get help to those who need it. Tens of thousands are destitute, many are injured, and diseases like cholera have broken out. There are also claims that the transitional government has blocked aid from getting to some of those who need it.